77372068 has 6 divisors (see below), whose sum is σ = 135401126. Its totient is φ = 38686032.

The previous prime is 77372017. The next prime is 77372081. The reversal of 77372068 is 86027377.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 4235364 = 8552^2 + 2058^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77372068.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9671505 + ... + 9671512.

Almost surely, 2^77372068 is an apocalyptic number.

It is an amenable number.

77372068 is a deficient number, since it is larger than the sum of its proper divisors (58029058).

77372068 is a wasteful number, since it uses less digits than its factorization.

77372068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343021 (or 19343019 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 77372068 is about 8796.1393804328. The cubic root of 77372068 is about 426.1162224126.

The spelling of 77372068 in words is "seventy-seven million, three hundred seventy-two thousand, sixty-eight".