77707493 has 8 divisors (see below), whose sum is σ = 84192768. Its totient is φ = 71434944.

The previous prime is 77707457. The next prime is 77707499. The reversal of 77707493 is 39470777.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77707493 - 2⁸ = 77707237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77707499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52421 + ... + 53882.

It is an arithmetic number, because the mean of its divisors is an integer number (10524096).

Almost surely, 2^77707493 is an apocalyptic number.

It is an amenable number.

77707493 is a deficient number, since it is larger than the sum of its proper divisors (6485275).

77707493 is a wasteful number, since it uses less digits than its factorization.

77707493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106363.

The product of its (nonzero) digits is 259308, while the sum is 44.

The square root of 77707493 is about 8815.1853639047. The cubic root of 77707493 is about 426.7311040238.

The spelling of 77707493 in words is "seventy-seven million, seven hundred seven thousand, four hundred ninety-three".