61612664 has 32 divisors (see below), whose sum is σ = 118972800. Its totient is φ = 29900640.

The previous prime is 61612651. The next prime is 61612667. The reversal of 61612664 is 46621616.

It is a super-2 number, since 2×61612664² = 7592240730353792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61612664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61612667) 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, 37247 + ... + 38865.

It is an arithmetic number, because the mean of its divisors is an integer number (3717900).

Almost surely, 2^61612664 is an apocalyptic number.

It is an amenable number.

61612664 is a deficient number, since it is larger than the sum of its proper divisors (57360136).

61612664 is a wasteful number, since it uses less digits than its factorization.

61612664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1759 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 61612664 is about 7849.3734781828. The cubic root of 61612664 is about 394.9632268282.

The spelling of 61612664 in words is "sixty-one million, six hundred twelve thousand, six hundred sixty-four".