77338313 has 4 divisors (see below), whose sum is σ = 83287428. Its totient is φ = 71389200.

The previous prime is 77338309. The next prime is 77338363. The reversal of 77338313 is 31383377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3429904 + 73908409 = 1852^2 + 8597^2 .

It is a cyclic number.

It is not a de Polignac number, because 77338313 - 2² = 77338309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77338363) 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, 2974538 + ... + 2974563.

It is an arithmetic number, because the mean of its divisors is an integer number (20821857).

Almost surely, 2^77338313 is an apocalyptic number.

It is an amenable number.

77338313 is a deficient number, since it is larger than the sum of its proper divisors (5949115).

77338313 is a wasteful number, since it uses less digits than its factorization.

77338313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949114.

The product of its digits is 31752, while the sum is 35.

The square root of 77338313 is about 8794.2204316244. The cubic root of 77338313 is about 426.0542463634.

The spelling of 77338313 in words is "seventy-seven million, three hundred thirty-eight thousand, three hundred thirteen".