76319905 has 8 divisors (see below), whose sum is σ = 91663272. Its totient is φ = 61003008.

The previous prime is 76319899. The next prime is 76319921. The reversal of 76319905 is 50991367.

It can be written as a sum of positive squares in 4 ways, for example, as 27081616 + 49238289 = 5204^2 + 7017^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76319905 - 2⁷ = 76319777 is a prime.

It is a super-3 number, since 3×76319905³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (11457909).

Almost surely, 2^76319905 is an apocalyptic number.

It is an amenable number.

76319905 is a deficient number, since it is larger than the sum of its proper divisors (15343367).

76319905 is a wasteful number, since it uses less digits than its factorization.

76319905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13235.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 76319905 is about 8736.1264299459. The cubic root of 76319905 is about 424.1758515403.

The spelling of 76319905 in words is "seventy-six million, three hundred nineteen thousand, nine hundred five".