77747113 has 4 divisors (see below), whose sum is σ = 77771520. Its totient is φ = 77722708.

The previous prime is 77747099. The next prime is 77747119. The reversal of 77747113 is 31174777.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77747113 is a prime.

It is a super-2 number, since 2×77747113² = 12089227159669538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77747119) 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, 6553 + ... + 14086.

It is an arithmetic number, because the mean of its divisors is an integer number (19442880).

Almost surely, 2^77747113 is an apocalyptic number.

It is an amenable number.

77747113 is a deficient number, since it is larger than the sum of its proper divisors (24407).

77747113 is a wasteful number, since it uses less digits than its factorization.

77747113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24406.

The product of its digits is 28812, while the sum is 37.

The square root of 77747113 is about 8817.4323360035. The cubic root of 77747113 is about 426.8036161806.

The spelling of 77747113 in words is "seventy-seven million, seven hundred forty-seven thousand, one hundred thirteen".