402670165 has 16 divisors (see below), whose sum is σ = 487079280. Its totient is φ = 319564800.

The previous prime is 402670159. The next prime is 402670171. The reversal of 402670165 is 561076204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402670159) and next prime (402670171).

It can be written as a sum of positive squares in 8 ways, for example, as 175324081 + 227346084 = 13241^2 + 15078^2 .

It is not a de Polignac number, because 402670165 - 2¹¹ = 402668117 is a prime.

It is a super-2 number, since 2×402670165² = 324286523562254450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458707 + ... + 459583.

It is an arithmetic number, because the mean of its divisors is an integer number (30442455).

Almost surely, 2^402670165 is an apocalyptic number.

It is an amenable number.

402670165 is a deficient number, since it is larger than the sum of its proper divisors (84409115).

402670165 is a wasteful number, since it uses less digits than its factorization.

402670165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 402670165 is about 20066.6430924557. The cubic root of 402670165 is about 738.4421604226.

The spelling of 402670165 in words is "four hundred two million, six hundred seventy thousand, one hundred sixty-five".