164257674 has 48 divisors (see below), whose sum is σ = 392532672. Its totient is φ = 44884224.

The previous prime is 164257661. The next prime is 164257703. The reversal of 164257674 is 476752461.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18522 + ... + 25914.

It is an arithmetic number, because the mean of its divisors is an integer number (8177764).

Almost surely, 2^164257674 is an apocalyptic number.

164257674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 164257674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196266336).

164257674 is an abundant number, since it is smaller than the sum of its proper divisors (228274998).

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

164257674 is a wasteful number, since it uses less digits than its factorization.

164257674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451 (or 7428 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 164257674 is about 12816.3050057339. The cubic root of 164257674 is about 547.6568904642.

The spelling of 164257674 in words is "one hundred sixty-four million, two hundred fifty-seven thousand, six hundred seventy-four".