61463745 has 64 divisors (see below), whose sum is σ = 125898240. Its totient is φ = 27869184.

The previous prime is 61463719. The next prime is 61463749. The reversal of 61463745 is 54736416.

It is a happy number.

61463745 is a `hidden beast` number, since 6 + 14 + 637 + 4 + 5 = 666.

It is not a de Polignac number, because 61463745 - 2¹⁴ = 61447361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61463749) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 182217 + ... + 182553.

It is an arithmetic number, because the mean of its divisors is an integer number (1967160).

Almost surely, 2^61463745 is an apocalyptic number.

It is an amenable number.

61463745 is an abundant number, since it is smaller than the sum of its proper divisors (64434495).

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

61463745 is a wasteful number, since it uses less digits than its factorization.

61463745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 545 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 61463745 is about 7839.8816955360. The cubic root of 61463745 is about 394.6447588576.

The spelling of 61463745 in words is "sixty-one million, four hundred sixty-three thousand, seven hundred forty-five".