64235772 has 18 divisors (see below), whose sum is σ = 162373848. Its totient is φ = 21411912.

The previous prime is 64235767. The next prime is 64235777. The reversal of 64235772 is 27753246.

It is a happy number.

64235772 is a `hidden beast` number, since 64 + 23 + 577 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (64235767) and next prime (64235777).

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

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: 1784327 = 64235772 / (6 + 4 + 2 + 3 + 5 + 7 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64235777) 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, 892128 + ... + 892199.

Almost surely, 2^64235772 is an apocalyptic number.

It is an amenable number.

64235772 is an abundant number, since it is smaller than the sum of its proper divisors (98138076).

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

64235772 is a wasteful number, since it uses less digits than its factorization.

64235772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784337 (or 1784332 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 64235772 is about 8014.7222035452. The cubic root of 64235772 is about 400.4905897250.

The spelling of 64235772 in words is "sixty-four million, two hundred thirty-five thousand, seven hundred seventy-two".