63749412 has 18 divisors (see below), whose sum is σ = 161144438. Its totient is φ = 21249792.

The previous prime is 63749393. The next prime is 63749417. The reversal of 63749412 is 21494736.

63749412 is a `hidden beast` number, since 637 + 4 + 9 + 4 + 12 = 666.

63749412 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52620516 + 11128896 = 7254^2 + 3336^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1770817 = 63749412 / (6 + 3 + 7 + 4 + 9 + 4 + 1 + 2).

63749412 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (63749417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 885373 + ... + 885444.

Almost surely, 2^63749412 is an apocalyptic number.

It is an amenable number.

63749412 is an abundant number, since it is smaller than the sum of its proper divisors (97395026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63749412 is a wasteful number, since it uses less digits than its factorization.

63749412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770827 (or 1770822 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 63749412 is about 7984.3228892624. The cubic root of 63749412 is about 399.4772588184.

The spelling of 63749412 in words is "sixty-three million, seven hundred forty-nine thousand, four hundred twelve".