76920407 has 4 divisors (see below), whose sum is σ = 77198376. Its totient is φ = 76642440.

The previous prime is 76920401. The next prime is 76920409. The reversal of 76920407 is 70402967.

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 76920407 - 2⁴ = 76920391 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 (76920401) 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, 138569 + ... + 139122.

It is an arithmetic number, because the mean of its divisors is an integer number (19299594).

Almost surely, 2^76920407 is an apocalyptic number.

76920407 is a deficient number, since it is larger than the sum of its proper divisors (277969).

76920407 is a wasteful number, since it uses less digits than its factorization.

76920407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277968.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 76920407 is about 8770.4279827156. The cubic root of 76920407 is about 425.2854497582.

The spelling of 76920407 in words is "seventy-six million, nine hundred twenty thousand, four hundred seven".