80574639 has 4 divisors (see below), whose sum is σ = 107432856. Its totient is φ = 53716424.

The previous prime is 80574631. The next prime is 80574643. The reversal of 80574639 is 93647508.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80574639 - 2³ = 80574631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80574639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80574631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13429104 + ... + 13429109.

It is an arithmetic number, because the mean of its divisors is an integer number (26858214).

Almost surely, 2^80574639 is an apocalyptic number.

80574639 is a deficient number, since it is larger than the sum of its proper divisors (26858217).

80574639 is a wasteful number, since it uses less digits than its factorization.

80574639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26858216.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 80574639 is about 8976.3377276036. The cubic root of 80574639 is about 431.9161627862.

The spelling of 80574639 in words is "eighty million, five hundred seventy-four thousand, six hundred thirty-nine".