61015216 has 40 divisors (see below), whose sum is σ = 121898448. Its totient is φ = 29568000.

The previous prime is 61015187. The next prime is 61015219. The reversal of 61015216 is 61251016.

It is not an unprimeable number, because it can be changed into a prime (61015219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184171 + ... + 184501.

Almost surely, 2^61015216 is an apocalyptic number.

It is an amenable number.

61015216 is a deficient number, since it is larger than the sum of its proper divisors (60883232).

61015216 is a wasteful number, since it uses less digits than its factorization.

61015216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 61015216 is about 7811.2237197510. The cubic root of 61015216 is about 393.6824465952.

The spelling of 61015216 in words is "sixty-one million, fifteen thousand, two hundred sixteen".