35638665 has 16 divisors (see below), whose sum is σ = 57103488. Its totient is φ = 18980096.

The previous prime is 35638657. The next prime is 35638667. The reversal of 35638665 is 56683653.

It is a cyclic number.

It is not a de Polignac number, because 35638665 - 2³ = 35638657 is a prime.

It is a super-2 number, since 2×35638665² = 2540228885964450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (35638667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13537 + ... + 15953.

It is an arithmetic number, because the mean of its divisors is an integer number (3568968).

Almost surely, 2^35638665 is an apocalyptic number.

It is an amenable number.

35638665 is a deficient number, since it is larger than the sum of its proper divisors (21464823).

35638665 is a wasteful number, since it uses less digits than its factorization.

35638665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408.

The product of its digits is 388800, while the sum is 42.

The square root of 35638665 is about 5969.8128111357. The cubic root of 35638665 is about 329.0842841066.

The spelling of 35638665 in words is "thirty-five million, six hundred thirty-eight thousand, six hundred sixty-five".