61790320 has 20 divisors (see below), whose sum is σ = 143662680. Its totient is φ = 24716096.

The previous prime is 61790303. The next prime is 61790341. The reversal of 61790320 is 2309716.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386110 + ... + 386269.

It is an arithmetic number, because the mean of its divisors is an integer number (7183134).

Almost surely, 2^61790320 is an apocalyptic number.

It is an amenable number.

61790320 is an abundant number, since it is smaller than the sum of its proper divisors (81872360).

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

61790320 is a wasteful number, since it uses less digits than its factorization.

61790320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772392 (or 772386 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 61790320 is about 7860.6819042625. The cubic root of 61790320 is about 395.3424792368.

The spelling of 61790320 in words is "sixty-one million, seven hundred ninety thousand, three hundred twenty".