77397693 has 16 divisors (see below), whose sum is σ = 104898240. Its totient is φ = 50754176.

The previous prime is 77397689. The next prime is 77397743. The reversal of 77397693 is 39679377.

It is a cyclic number.

It is not a de Polignac number, because 77397693 - 2² = 77397689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77397193) 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, 59971 + ... + 61247.

It is an arithmetic number, because the mean of its divisors is an integer number (6556140).

Almost surely, 2^77397693 is an apocalyptic number.

It is an amenable number.

77397693 is a deficient number, since it is larger than the sum of its proper divisors (27500547).

77397693 is a wasteful number, since it uses less digits than its factorization.

77397693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its digits is 1500282, while the sum is 51.

The square root of 77397693 is about 8797.5958647803. The cubic root of 77397693 is about 426.1632592966.

The spelling of 77397693 in words is "seventy-seven million, three hundred ninety-seven thousand, six hundred ninety-three".