61567320 has 64 divisors (see below), whose sum is σ = 192741120. Its totient is φ = 15703424.

The previous prime is 61567313. The next prime is 61567339. The reversal of 61567320 is 2376516.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8394 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (3011580).

Almost surely, 2^61567320 is an apocalyptic number.

61567320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61567320 is an abundant number, since it is smaller than the sum of its proper divisors (131173800).

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

61567320 is a wasteful number, since it uses less digits than its factorization.

61567320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22344 (or 22340 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 61567320 is about 7846.4845631659. The cubic root of 61567320 is about 394.8663116453.

The spelling of 61567320 in words is "sixty-one million, five hundred sixty-seven thousand, three hundred twenty".