77073007 has 6 divisors (see below), whose sum is σ = 84716744. Its totient is φ = 70066260.

The previous prime is 77072969. The next prime is 77073013. The reversal of 77073007 is 70037077.

It is a de Polignac number, because none of the positive numbers 2^k-77073007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77073007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77073047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318363 + ... + 318604.

Almost surely, 2^77073007 is an apocalyptic number.

77073007 is a deficient number, since it is larger than the sum of its proper divisors (7643737).

77073007 is a wasteful number, since it uses less digits than its factorization.

77073007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636989 (or 636978 counting only the distinct ones).

The product of its (nonzero) digits is 7203, while the sum is 31.

The square root of 77073007 is about 8779.1233617030. The cubic root of 77073007 is about 425.5665008371.

The spelling of 77073007 in words is "seventy-seven million, seventy-three thousand, seven".