90349665 has 32 divisors (see below), whose sum is σ = 169061376. Its totient is φ = 40340160.

The previous prime is 90349663. The next prime is 90349667. The reversal of 90349665 is 56694309.

It is an interprime number because it is at equal distance from previous prime (90349663) and next prime (90349667).

It is not a de Polignac number, because 90349665 - 2¹ = 90349663 is a prime.

It is a super-2 number, since 2×90349665² = 16326123931224450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90349661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5491 + ... + 14520.

It is an arithmetic number, because the mean of its divisors is an integer number (5283168).

Almost surely, 2^90349665 is an apocalyptic number.

It is an amenable number.

90349665 is a deficient number, since it is larger than the sum of its proper divisors (78711711).

90349665 is a wasteful number, since it uses less digits than its factorization.

90349665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20069.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 90349665 is about 9505.2440789282. The cubic root of 90349665 is about 448.7200914779.

The spelling of 90349665 in words is "ninety million, three hundred forty-nine thousand, six hundred sixty-five".