61457712 has 40 divisors (see below), whose sum is σ = 159227904. Its totient is φ = 20426304.

The previous prime is 61457689. The next prime is 61457719. The reversal of 61457712 is 21775416.

It is not an unprimeable number, because it can be changed into a prime (61457719) 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, 16713 + ... + 20055.

Almost surely, 2^61457712 is an apocalyptic number.

It is an amenable number.

61457712 is an abundant number, since it is smaller than the sum of its proper divisors (97770192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61457712 is a wasteful number, since it uses less digits than its factorization.

61457712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737 (or 3731 counting only the distinct ones).

The product of its digits is 11760, while the sum is 33.

The square root of 61457712 is about 7839.4969226348. The cubic root of 61457712 is about 394.6318462604.

The spelling of 61457712 in words is "sixty-one million, four hundred fifty-seven thousand, seven hundred twelve".