166465357 has 4 divisors (see below), whose sum is σ = 168021216. Its totient is φ = 164909500.

The previous prime is 166465349. The next prime is 166465361. The reversal of 166465357 is 753564661.

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 an emirpimes, since its reverse is a distinct semiprime: 753564661 = 17 ⋅44327333.

It is a cyclic number.

It is not a de Polignac number, because 166465357 - 2³ = 166465349 is a prime.

It is a super-2 number, since 2×166465357² = 55421430162274898, 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 (166465457) 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, 777769 + ... + 777982.

It is an arithmetic number, because the mean of its divisors is an integer number (42005304).

Almost surely, 2^166465357 is an apocalyptic number.

It is an amenable number.

166465357 is a deficient number, since it is larger than the sum of its proper divisors (1555859).

166465357 is a wasteful number, since it uses less digits than its factorization.

166465357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555858.

The product of its digits is 453600, while the sum is 43.

The square root of 166465357 is about 12902.1454417473. The cubic root of 166465357 is about 550.0995489229.

The spelling of 166465357 in words is "one hundred sixty-six million, four hundred sixty-five thousand, three hundred fifty-seven".