90632731 has 8 divisors (see below), whose sum is σ = 103948544. Its totient is φ = 77409000.

The previous prime is 90632683. The next prime is 90632741. The reversal of 90632731 is 13723609.

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

It is a cyclic number.

It is not a de Polignac number, because 90632731 - 2¹³ = 90624539 is a prime.

It is a super-2 number, since 2×90632731² = 16428583857036722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90632693 and 90632702.

It is not an unprimeable number, because it can be changed into a prime (90632741) 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, 20895 + ... + 24856.

It is an arithmetic number, because the mean of its divisors is an integer number (12993568).

Almost surely, 2^90632731 is an apocalyptic number.

90632731 is a deficient number, since it is larger than the sum of its proper divisors (13315813).

90632731 is a wasteful number, since it uses less digits than its factorization.

90632731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46041.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 90632731 is about 9520.1224256834. The cubic root of 90632731 is about 449.1882171136.

The spelling of 90632731 in words is "ninety million, six hundred thirty-two thousand, seven hundred thirty-one".