77120007 has 16 divisors (see below), whose sum is σ = 109882080. Its totient is φ = 47941632.

The previous prime is 77120003. The next prime is 77120009. The reversal of 77120007 is 70002177.

It is not a de Polignac number, because 77120007 - 2² = 77120003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77120003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378 + ... + 12495.

It is an arithmetic number, because the mean of its divisors is an integer number (6867630).

Almost surely, 2^77120007 is an apocalyptic number.

77120007 is a deficient number, since it is larger than the sum of its proper divisors (32762073).

77120007 is a wasteful number, since it uses less digits than its factorization.

77120007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14002.

The product of its (nonzero) digits is 686, while the sum is 24.

The square root of 77120007 is about 8781.7997585916. The cubic root of 77120007 is about 425.6529883635.

The spelling of 77120007 in words is "seventy-seven million, one hundred twenty thousand, seven".