77316007 has 4 divisors (see below), whose sum is σ = 77748120. Its totient is φ = 76883896.

The previous prime is 77315981. The next prime is 77316049. The reversal of 77316007 is 70061377.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70061377 = 101 ⋅693677.

It is a cyclic number.

It is not a de Polignac number, because 77316007 - 2¹⁹ = 76791719 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 77316007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77316067) 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, 215788 + ... + 216145.

It is an arithmetic number, because the mean of its divisors is an integer number (19437030).

Almost surely, 2^77316007 is an apocalyptic number.

77316007 is a deficient number, since it is larger than the sum of its proper divisors (432113).

77316007 is a wasteful number, since it uses less digits than its factorization.

77316007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432112.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 77316007 is about 8792.9521208750. The cubic root of 77316007 is about 426.0132814157.

The spelling of 77316007 in words is "seventy-seven million, three hundred sixteen thousand, seven".