90721035 has 24 divisors (see below), whose sum is σ = 162324864. Its totient is φ = 46823040.

The previous prime is 90721021. The next prime is 90721049. The reversal of 90721035 is 53012709.

It is an interprime number because it is at equal distance from previous prime (90721021) and next prime (90721049).

It is not a de Polignac number, because 90721035 - 2²⁰ = 89672459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31122 + ... + 33911.

It is an arithmetic number, because the mean of its divisors is an integer number (6763536).

Almost surely, 2^90721035 is an apocalyptic number.

90721035 is a deficient number, since it is larger than the sum of its proper divisors (71603829).

90721035 is a wasteful number, since it uses less digits than its factorization.

90721035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65075 (or 65072 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 90721035 is about 9524.7590520706. The cubic root of 90721035 is about 449.3340519971.

The spelling of 90721035 in words is "ninety million, seven hundred twenty-one thousand, thirty-five".