80564737 has 8 divisors (see below), whose sum is σ = 88051680. Its totient is φ = 73104960.

The previous prime is 80564711. The next prime is 80564741. The reversal of 80564737 is 73746508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80564737 - 2¹⁹ = 80040449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80564737.

It is not an unprimeable number, because it can be changed into a prime (80564767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312 + ... + 12697.

It is an arithmetic number, because the mean of its divisors is an integer number (11006460).

Almost surely, 2^80564737 is an apocalyptic number.

It is an amenable number.

80564737 is a deficient number, since it is larger than the sum of its proper divisors (7486943).

80564737 is a wasteful number, since it uses less digits than its factorization.

80564737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13583.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 80564737 is about 8975.7861494133. The cubic root of 80564737 is about 431.8984690093.

The spelling of 80564737 in words is "eighty million, five hundred sixty-four thousand, seven hundred thirty-seven".