61619912 has 16 divisors (see below), whose sum is σ = 115692300. Its totient is φ = 30768640.

The previous prime is 61619897. The next prime is 61619923. The reversal of 61619912 is 21991616.

It can be written as a sum of positive squares in 2 ways, for example, as 59505796 + 2114116 = 7714^2 + 1454^2 .

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, 1712 + ... + 11232.

Almost surely, 2^61619912 is an apocalyptic number.

It is an amenable number.

61619912 is a deficient number, since it is larger than the sum of its proper divisors (54072388).

61619912 is a wasteful number, since it uses less digits than its factorization.

61619912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336 (or 10332 counting only the distinct ones).

The product of its digits is 5832, while the sum is 35.

The square root of 61619912 is about 7849.8351575049. The cubic root of 61619912 is about 394.9787138025.

The spelling of 61619912 in words is "sixty-one million, six hundred nineteen thousand, nine hundred twelve".