61579264 has 28 divisors (see below), whose sum is σ = 123167394. Its totient is φ = 30785536.

The previous prime is 61579241. The next prime is 61579279. The reversal of 61579264 is 46297516.

It can be written as a sum of positive squares in only one way, i.e., 38539264 + 23040000 = 6208^2 + 4800^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4434 + ... + 11950.

Almost surely, 2^61579264 is an apocalyptic number.

61579264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61579264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61583697).

61579264 is an abundant number, since it is smaller than the sum of its proper divisors (61588130).

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

61579264 is an frugal number, since it uses more digits than its factorization.

61579264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7543 (or 7519 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 61579264 is about 7847.2456314302. The cubic root of 61579264 is about 394.8918445540.

The spelling of 61579264 in words is "sixty-one million, five hundred seventy-nine thousand, two hundred sixty-four".