77436397 has 8 divisors (see below), whose sum is σ = 78688512. Its totient is φ = 76194000.

The previous prime is 77436391. The next prime is 77436431. The reversal of 77436397 is 79363477.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77436397 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 (77436391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14572 + ... + 19162.

It is an arithmetic number, because the mean of its divisors is an integer number (9836064).

Almost surely, 2^77436397 is an apocalyptic number.

It is an amenable number.

77436397 is a deficient number, since it is larger than the sum of its proper divisors (1252115).

77436397 is a wasteful number, since it uses less digits than its factorization.

77436397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859.

The product of its digits is 666792, while the sum is 46.

The square root of 77436397 is about 8799.7952817097. The cubic root of 77436397 is about 426.2342841274.

The spelling of 77436397 in words is "seventy-seven million, four hundred thirty-six thousand, three hundred ninety-seven".