61694164 has 24 divisors (see below), whose sum is σ = 126260288. Its totient is φ = 25824960.

The previous prime is 61694161. The next prime is 61694189. The reversal of 61694164 is 46149616.

61694164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61694161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24417 + ... + 26824.

Almost surely, 2^61694164 is an apocalyptic number.

It is an amenable number.

61694164 is an abundant number, since it is smaller than the sum of its proper divisors (64566124).

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

61694164 is a wasteful number, since it uses less digits than its factorization.

61694164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51295 (or 51293 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 61694164 is about 7854.5632596600. The cubic root of 61694164 is about 395.1372999170.

The spelling of 61694164 in words is "sixty-one million, six hundred ninety-four thousand, one hundred sixty-four".