164677157 has 4 divisors (see below), whose sum is σ = 164703360. Its totient is φ = 164650956.

The previous prime is 164677153. The next prime is 164677193. The reversal of 164677157 is 751776461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 751776461 = 1091 ⋅689071.

It is a cyclic number.

It is not a de Polignac number, because 164677157 - 2² = 164677153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164677153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2594 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (41175840).

Almost surely, 2^164677157 is an apocalyptic number.

It is an amenable number.

164677157 is a deficient number, since it is larger than the sum of its proper divisors (26203).

164677157 is a wasteful number, since it uses less digits than its factorization.

164677157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26202.

The product of its digits is 246960, while the sum is 44.

The square root of 164677157 is about 12832.6597788611. The cubic root of 164677157 is about 548.1226981636.

The spelling of 164677157 in words is "one hundred sixty-four million, six hundred seventy-seven thousand, one hundred fifty-seven".