61591474 has 16 divisors (see below), whose sum is σ = 105686208. Its totient is φ = 26371152.

The previous prime is 61591469. The next prime is 61591477. The reversal of 61591474 is 47419516.

It is not an unprimeable number, because it can be changed into a prime (61591477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26857 + ... + 29059.

It is an arithmetic number, because the mean of its divisors is an integer number (6605388).

Almost surely, 2^61591474 is an apocalyptic number.

61591474 is a deficient number, since it is larger than the sum of its proper divisors (44094734).

61591474 is a wasteful number, since it uses less digits than its factorization.

61591474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209.

The product of its digits is 30240, while the sum is 37.

The square root of 61591474 is about 7848.0235728494. The cubic root of 61591474 is about 394.9179426833.

The spelling of 61591474 in words is "sixty-one million, five hundred ninety-one thousand, four hundred seventy-four".