61523864 has 8 divisors (see below), whose sum is σ = 115357260. Its totient is φ = 30761928.

The previous prime is 61523849. The next prime is 61523879. The reversal of 61523864 is 46832516.

It is an interprime number because it is at equal distance from previous prime (61523849) and next prime (61523879).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3845234 + ... + 3845249.

Almost surely, 2^61523864 is an apocalyptic number.

It is an amenable number.

61523864 is a deficient number, since it is larger than the sum of its proper divisors (53833396).

61523864 is a wasteful number, since it uses less digits than its factorization.

61523864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690489 (or 7690485 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 61523864 is about 7843.7149361766. The cubic root of 61523864 is about 394.7733870808.

The spelling of 61523864 in words is "sixty-one million, five hundred twenty-three thousand, eight hundred sixty-four".