164662563 has 8 divisors (see below), whose sum is σ = 236438608. Its totient is φ = 101330784.

The previous prime is 164662559. The next prime is 164662567. The reversal of 164662563 is 365266461.

It is an interprime number because it is at equal distance from previous prime (164662559) and next prime (164662567).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164662563 - 2² = 164662559 is a prime.

It is a super-2 number, since 2×164662563² = 54227519307457938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4222117 = 164662563 / (1 + 6 + 4 + 6 + 6 + 2 + 5 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164662567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111020 + ... + 2111097.

It is an arithmetic number, because the mean of its divisors is an integer number (29554826).

Almost surely, 2^164662563 is an apocalyptic number.

164662563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164662563 is a deficient number, since it is larger than the sum of its proper divisors (71776045).

164662563 is a wasteful number, since it uses less digits than its factorization.

164662563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222133.

The product of its digits is 155520, while the sum is 39.

The square root of 164662563 is about 12832.0911390155. The cubic root of 164662563 is about 548.1065057965.

The spelling of 164662563 in words is "one hundred sixty-four million, six hundred sixty-two thousand, five hundred sixty-three".