61616408 has 32 divisors (see below), whose sum is σ = 132742560. Its totient is φ = 26265600.

The previous prime is 61616393. The next prime is 61616413. The reversal of 61616408 is 80461616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7958 + ... + 13658.

It is an arithmetic number, because the mean of its divisors is an integer number (4148205).

Almost surely, 2^61616408 is an apocalyptic number.

It is an amenable number.

61616408 is an abundant number, since it is smaller than the sum of its proper divisors (71126152).

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

61616408 is a wasteful number, since it uses less digits than its factorization.

61616408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907 (or 5903 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 61616408 is about 7849.6119649318. The cubic root of 61616408 is about 394.9712268738.

The spelling of 61616408 in words is "sixty-one million, six hundred sixteen thousand, four hundred eight".