90956645 has 12 divisors (see below), whose sum is σ = 118190916. Its totient is φ = 67167360.

The previous prime is 90956641. The next prime is 90956659. The reversal of 90956645 is 54665909.

It can be written as a sum of positive squares in 6 ways, for example, as 30459361 + 60497284 = 5519^2 + 7778^2 .

It is not a de Polignac number, because 90956645 - 2² = 90956641 is a prime.

It is a super-3 number, since 3×90956645³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90956596 and 90956605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90956641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52976 + ... + 54665.

It is an arithmetic number, because the mean of its divisors is an integer number (9849243).

Almost surely, 2^90956645 is an apocalyptic number.

It is an amenable number.

90956645 is a deficient number, since it is larger than the sum of its proper divisors (27234271).

90956645 is a wasteful number, since it uses less digits than its factorization.

90956645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107672 (or 107659 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 90956645 is about 9537.1193239888. The cubic root of 90956645 is about 449.7227015866.

The spelling of 90956645 in words is "ninety million, nine hundred fifty-six thousand, six hundred forty-five".