90245677069 has 4 divisors (see below), whose sum is σ = 91725114460. Its totient is φ = 88766239680.

The previous prime is 90245677043. The next prime is 90245677087. The reversal of 90245677069 is 96077654209.

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 5819401225 + 84426275844 = 76285^2 + 290562^2 .

It is a cyclic number.

It is not a de Polignac number, because 90245677069 - 2⁵ = 90245677037 is a prime.

It is a super-2 number, since 2×90245677069² (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 (90245677969) 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, 739718604 + ... + 739718725.

It is an arithmetic number, because the mean of its divisors is an integer number (22931278615).

Almost surely, 2^90245677069 is an apocalyptic number.

It is an amenable number.

90245677069 is a deficient number, since it is larger than the sum of its proper divisors (1479437391).

90245677069 is a wasteful number, since it uses less digits than its factorization.

90245677069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479437390.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 90245677069 in words is "ninety billion, two hundred forty-five million, six hundred seventy-seven thousand, sixty-nine".