61812392 has 8 divisors (see below), whose sum is σ = 115898250. Its totient is φ = 30906192.

The previous prime is 61812383. The next prime is 61812397. The reversal of 61812392 is 29321816.

It can be written as a sum of positive squares in only one way, i.e., 40780996 + 21031396 = 6386^2 + 4586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (61812397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3863267 + ... + 3863282.

Almost surely, 2^61812392 is an apocalyptic number.

It is an amenable number.

61812392 is a deficient number, since it is larger than the sum of its proper divisors (54085858).

61812392 is a wasteful number, since it uses less digits than its factorization.

61812392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726555 (or 7726551 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 61812392 is about 7862.0857283548. The cubic root of 61812392 is about 395.3895468056.

The spelling of 61812392 in words is "sixty-one million, eight hundred twelve thousand, three hundred ninety-two".