77070666 has 16 divisors (see below), whose sum is σ = 154453824. Its totient is φ = 25638144.

The previous prime is 77070649. The next prime is 77070683. The reversal of 77070666 is 66607077.

It is an interprime number because it is at equal distance from previous prime (77070649) and next prime (77070683).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9751 + ... + 15786.

It is an arithmetic number, because the mean of its divisors is an integer number (9653364).

Almost surely, 2^77070666 is an apocalyptic number.

77070666 is an abundant number, since it is smaller than the sum of its proper divisors (77383158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77070666 is a wasteful number, since it uses less digits than its factorization.

77070666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26045.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 77070666 is about 8778.9900330277. The cubic root of 77070666 is about 425.5621921031.

The spelling of 77070666 in words is "seventy-seven million, seventy thousand, six hundred sixty-six".