61399592 has 16 divisors (see below), whose sum is σ = 118838400. Its totient is φ = 29709360.

The previous prime is 61399579. The next prime is 61399607. The reversal of 61399592 is 29599316.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 123542 + ... + 124037.

It is an arithmetic number, because the mean of its divisors is an integer number (7427400).

Almost surely, 2^61399592 is an apocalyptic number.

61399592 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61399592 is a deficient number, since it is larger than the sum of its proper divisors (57438808).

61399592 is a wasteful number, since it uses less digits than its factorization.

61399592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247616 (or 247612 counting only the distinct ones).

The product of its digits is 131220, while the sum is 44.

The square root of 61399592 is about 7835.7891753160. The cubic root of 61399592 is about 394.5074071077.

The spelling of 61399592 in words is "sixty-one million, three hundred ninety-nine thousand, five hundred ninety-two".