80745637 has 8 divisors (see below), whose sum is σ = 93393216. Its totient is φ = 68376192.

The previous prime is 80745559. The next prime is 80745641. The reversal of 80745637 is 73654708.

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 80745637 - 2¹¹ = 80743589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80745637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80745667) 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, 68908 + ... + 70069.

It is an arithmetic number, because the mean of its divisors is an integer number (11674152).

Almost surely, 2^80745637 is an apocalyptic number.

It is an amenable number.

80745637 is a deficient number, since it is larger than the sum of its proper divisors (12647579).

80745637 is a wasteful number, since it uses less digits than its factorization.

80745637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139067.

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

The square root of 80745637 is about 8985.8576107125. The cubic root of 80745637 is about 432.2214888597.

The spelling of 80745637 in words is "eighty million, seven hundred forty-five thousand, six hundred thirty-seven".