61288464 has 40 divisors (see below), whose sum is σ = 160506592. Its totient is φ = 20148480.

The previous prime is 61288441. The next prime is 61288483. The reversal of 61288464 is 46488216.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5242 + ... + 12249.

Almost surely, 2^61288464 is an apocalyptic number.

It is an amenable number.

61288464 is an abundant number, since it is smaller than the sum of its proper divisors (99218128).

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

61288464 is a wasteful number, since it uses less digits than its factorization.

61288464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17575 (or 17569 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 61288464 is about 7828.6949103922. The cubic root of 61288464 is about 394.2692551716.

The spelling of 61288464 in words is "sixty-one million, two hundred eighty-eight thousand, four hundred sixty-four".