165479690 has 32 divisors (see below), whose sum is σ = 307023696. Its totient is φ = 64176640.

The previous prime is 165479689. The next prime is 165479711. The reversal of 165479690 is 96974561.

It can be written as a sum of positive squares in 8 ways, for example, as 51566761 + 113912929 = 7181^2 + 10673^2 .

It is a super-2 number, since 2×165479690² = 54767055604992200, which contains 22 as substring.

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, 69764 + ... + 72096.

Almost surely, 2^165479690 is an apocalyptic number.

165479690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165479690 is a deficient number, since it is larger than the sum of its proper divisors (141544006).

165479690 is a wasteful number, since it uses less digits than its factorization.

165479690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 165479690 is about 12863.8909354829. The cubic root of 165479690 is about 549.0116575328.

The spelling of 165479690 in words is "one hundred sixty-five million, four hundred seventy-nine thousand, six hundred ninety".