166722464 has 24 divisors (see below), whose sum is σ = 338825088. Its totient is φ = 80671680.

The previous prime is 166722461. The next prime is 166722467. The reversal of 166722464 is 464227661.

It is an interprime number because it is at equal distance from previous prime (166722461) and next prime (166722467).

It is not an unprimeable number, because it can be changed into a prime (166722461) 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, 83042 + ... + 85025.

It is an arithmetic number, because the mean of its divisors is an integer number (14117712).

Almost surely, 2^166722464 is an apocalyptic number.

It is an amenable number.

166722464 is an abundant number, since it is smaller than the sum of its proper divisors (172102624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166722464 is a wasteful number, since it uses less digits than its factorization.

166722464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168108 (or 168100 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 166722464 is about 12912.1053279471. The cubic root of 166722464 is about 550.3826142088.

The spelling of 166722464 in words is "one hundred sixty-six million, seven hundred twenty-two thousand, four hundred sixty-four".