75798921 has 16 divisors (see below), whose sum is σ = 112601088. Its totient is φ = 44960400.

The previous prime is 75798917. The next prime is 75798959. The reversal of 75798921 is 12989757.

It is not a de Polignac number, because 75798921 - 2² = 75798917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75798911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22885 + ... + 25986.

It is an arithmetic number, because the mean of its divisors is an integer number (7037568).

Almost surely, 2^75798921 is an apocalyptic number.

It is an amenable number.

75798921 is a deficient number, since it is larger than the sum of its proper divisors (36802167).

75798921 is a wasteful number, since it uses less digits than its factorization.

75798921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48932.

The product of its digits is 317520, while the sum is 48.

The square root of 75798921 is about 8706.2575771683. The cubic root of 75798921 is about 423.2084604240.

The spelling of 75798921 in words is "seventy-five million, seven hundred ninety-eight thousand, nine hundred twenty-one".