61660516 has 12 divisors (see below), whose sum is σ = 112597632. Its totient is φ = 29489768.

The previous prime is 61660507. The next prime is 61660523. The reversal of 61660516 is 61506616.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335020 + ... + 335203.

It is an arithmetic number, because the mean of its divisors is an integer number (9383136).

Almost surely, 2^61660516 is an apocalyptic number.

It is an amenable number.

61660516 is a deficient number, since it is larger than the sum of its proper divisors (50937116).

61660516 is a wasteful number, since it uses less digits than its factorization.

61660516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670250 (or 670248 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 61660516 is about 7852.4210279378. The cubic root of 61660516 is about 395.0654508859.

The spelling of 61660516 in words is "sixty-one million, six hundred sixty thousand, five hundred sixteen".