61315612 has 12 divisors (see below), whose sum is σ = 107691640. Its totient is φ = 30546576.

The previous prime is 61315567. The next prime is 61315621. The reversal of 61315612 is 21651316.

It is a congruent number.

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, 26562 + ... + 28777.

Almost surely, 2^61315612 is an apocalyptic number.

It is an amenable number.

61315612 is a deficient number, since it is larger than the sum of its proper divisors (46376028).

61315612 is a wasteful number, since it uses less digits than its factorization.

61315612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55620 (or 55618 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 61315612 is about 7830.4285961881. The cubic root of 61315612 is about 394.3274610232.

Adding to 61315612 its reverse (21651316), we get a palindrome (82966928).

The spelling of 61315612 in words is "sixty-one million, three hundred fifteen thousand, six hundred twelve".