61408464 has 40 divisors (see below), whose sum is σ = 170843232. Its totient is φ = 18894720.

The previous prime is 61408433. The next prime is 61408481. The reversal of 61408464 is 46480416.

It is a congruent number.

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, 48582 + ... + 49829.

Almost surely, 2^61408464 is an apocalyptic number.

It is an amenable number.

61408464 is an abundant number, since it is smaller than the sum of its proper divisors (109434768).

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

61408464 is a wasteful number, since it uses less digits than its factorization.

61408464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98435 (or 98429 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 61408464 is about 7836.3552752539. The cubic root of 61408464 is about 394.5264077831.

The spelling of 61408464 in words is "sixty-one million, four hundred eight thousand, four hundred sixty-four".