61519712 has 12 divisors (see below), whose sum is σ = 121116996. Its totient is φ = 30759840.

The previous prime is 61519693. The next prime is 61519723. The reversal of 61519712 is 21791516.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1922491 = 61519712 / (6 + 1 + 5 + 1 + 9 + 7 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961214 + ... + 961277.

It is an arithmetic number, because the mean of its divisors is an integer number (10093083).

Almost surely, 2^61519712 is an apocalyptic number.

It is an amenable number.

61519712 is a deficient number, since it is larger than the sum of its proper divisors (59597284).

61519712 is a wasteful number, since it uses less digits than its factorization.

61519712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922501 (or 1922493 counting only the distinct ones).

The product of its digits is 3780, while the sum is 32.

The square root of 61519712 is about 7843.4502612052. The cubic root of 61519712 is about 394.7645063210.

The spelling of 61519712 in words is "sixty-one million, five hundred nineteen thousand, seven hundred twelve".