165064997 has 16 divisors (see below), whose sum is σ = 175308672. Its totient is φ = 155105280.

The previous prime is 165064993. The next prime is 165065011. The reversal of 165064997 is 799460561.

165064997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 165064997 - 2² = 165064993 is a prime.

It is a super-2 number, since 2×165064997² = 54492906469220018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165064993) 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, 537518 + ... + 537824.

It is an arithmetic number, because the mean of its divisors is an integer number (10956792).

Almost surely, 2^165064997 is an apocalyptic number.

It is an amenable number.

165064997 is a deficient number, since it is larger than the sum of its proper divisors (10243675).

165064997 is a wasteful number, since it uses less digits than its factorization.

165064997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

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

The square root of 165064997 is about 12847.7623343522. The cubic root of 165064997 is about 548.5526651769.

The spelling of 165064997 in words is "one hundred sixty-five million, sixty-four thousand, nine hundred ninety-seven".