80619975 has 48 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 42449760.

The previous prime is 80619953. The next prime is 80620031. The reversal of 80619975 is 57991608.

It is not a de Polignac number, because 80619975 - 2⁹ = 80619463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80619975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55306 + ... + 56744.

It is an arithmetic number, because the mean of its divisors is an integer number (3124800).

Almost surely, 2^80619975 is an apocalyptic number.

80619975 is a deficient number, since it is larger than the sum of its proper divisors (69370425).

80619975 is a wasteful number, since it uses less digits than its factorization.

80619975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1530 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 80619975 is about 8978.8626785356. The cubic root of 80619975 is about 431.9971546880.

The spelling of 80619975 in words is "eighty million, six hundred nineteen thousand, nine hundred seventy-five".