61909374 has 24 divisors (see below), whose sum is σ = 128246040. Its totient is φ = 19923232.

The previous prime is 61909369. The next prime is 61909409. The reversal of 61909374 is 47390916.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1089 + ... + 11180.

It is an arithmetic number, because the mean of its divisors is an integer number (5343585).

Almost surely, 2^61909374 is an apocalyptic number.

61909374 is an abundant number, since it is smaller than the sum of its proper divisors (66336666).

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

61909374 is a wasteful number, since it uses less digits than its factorization.

61909374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12332 (or 12303 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 61909374 is about 7868.2510127728. The cubic root of 61909374 is about 395.5962239826.

The spelling of 61909374 in words is "sixty-one million, nine hundred nine thousand, three hundred seventy-four".