77536493 has 2 divisors, whose sum is σ = 77536494. Its totient is φ = 77536492.

The previous prime is 77536489. The next prime is 77536499. The reversal of 77536493 is 39463577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52954729 + 24581764 = 7277^2 + 4958^2 .

It is a cyclic number.

It is not a de Polignac number, because 77536493 - 2² = 77536489 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77536499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38768246 + 38768247.

It is an arithmetic number, because the mean of its divisors is an integer number (38768247).

Almost surely, 2^77536493 is an apocalyptic number.

It is an amenable number.

77536493 is a deficient number, since it is larger than the sum of its proper divisors (1).

77536493 is an equidigital number, since it uses as much as digits as its factorization.

77536493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 44.

The square root of 77536493 is about 8805.4808500161. The cubic root of 77536493 is about 426.4178583414.

The spelling of 77536493 in words is "seventy-seven million, five hundred thirty-six thousand, four hundred ninety-three".