80878574 has 16 divisors (see below), whose sum is σ = 139099488. Its totient is φ = 34549632.

The previous prime is 80878561. The next prime is 80878579. The reversal of 80878574 is 47587808.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80878579) 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, 4847 + ... + 13610.

It is an arithmetic number, because the mean of its divisors is an integer number (8693718).

Almost surely, 2^80878574 is an apocalyptic number.

80878574 is a deficient number, since it is larger than the sum of its proper divisors (58220914).

80878574 is a wasteful number, since it uses less digits than its factorization.

80878574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18779.

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 80878574 is about 8993.2515810468. The cubic root of 80878574 is about 432.4585572907.

It can be divided in two parts, 8087 and 8574, that added together give a palindrome (16661).

The spelling of 80878574 in words is "eighty million, eight hundred seventy-eight thousand, five hundred seventy-four".