75920407 has 4 divisors (see below), whose sum is σ = 75938920. Its totient is φ = 75901896.

The previous prime is 75920393. The next prime is 75920423. The reversal of 75920407 is 70402957.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70402957 = 683 ⋅103079.

It is a cyclic number.

It is not a de Polignac number, because 75920407 - 2⁷ = 75920279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75920497) 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, 57 + ... + 12322.

It is an arithmetic number, because the mean of its divisors is an integer number (18984730).

Almost surely, 2^75920407 is an apocalyptic number.

75920407 is a deficient number, since it is larger than the sum of its proper divisors (18513).

75920407 is a wasteful number, since it uses less digits than its factorization.

75920407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 75920407 is about 8713.2317196319. The cubic root of 75920407 is about 423.4344375182.

The spelling of 75920407 in words is "seventy-five million, nine hundred twenty thousand, four hundred seven".