166610531 has 8 divisors (see below), whose sum is σ = 168612384. Its totient is φ = 164620800.

The previous prime is 166610527. The next prime is 166610567. The reversal of 166610531 is 135016661.

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

It is a cyclic number.

It is not a de Polignac number, because 166610531 - 2² = 166610527 is a prime.

It is a super-2 number, since 2×166610531² = 55518138080203922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166610494 and 166610503.

It is not an unprimeable number, because it can be changed into a prime (166610501) 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, 26285 + ... + 32001.

It is an arithmetic number, because the mean of its divisors is an integer number (21076548).

Almost surely, 2^166610531 is an apocalyptic number.

166610531 is a deficient number, since it is larger than the sum of its proper divisors (2001853).

166610531 is a wasteful number, since it uses less digits than its factorization.

166610531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 166610531 is about 12907.7701792370. The cubic root of 166610531 is about 550.2594159153.

The spelling of 166610531 in words is "one hundred sixty-six million, six hundred ten thousand, five hundred thirty-one".