90762387613 has 4 divisors (see below), whose sum is σ = 91072157148. Its totient is φ = 90452618080.

The previous prime is 90762387607. The next prime is 90762387623. The reversal of 90762387613 is 31678326709.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52231445764 + 38530941849 = 228542^2 + 196293^2 .

It is a cyclic number.

It is not a de Polignac number, because 90762387613 - 2⁹ = 90762387101 is a prime.

It is a super-2 number, since 2×90762387613² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90762387623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154884328 + ... + 154884913.

It is an arithmetic number, because the mean of its divisors is an integer number (22768039287).

Almost surely, 2^90762387613 is an apocalyptic number.

It is an amenable number.

90762387613 is a deficient number, since it is larger than the sum of its proper divisors (309769535).

90762387613 is a wasteful number, since it uses less digits than its factorization.

90762387613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309769534.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 90762387613 in words is "ninety billion, seven hundred sixty-two million, three hundred eighty-seven thousand, six hundred thirteen".