16373664 has 60 divisors (see below), whose sum is σ = 48162114. Its totient is φ = 5457024.

The previous prime is 16373663. The next prime is 16373671. The reversal of 16373664 is 46637361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 2624400 = 3708^2 + 1620^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16373663) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 567 + ... + 5750.

Almost surely, 2^16373664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16373664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24081057).

16373664 is an abundant number, since it is smaller than the sum of its proper divisors (31788450).

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

16373664 is an equidigital number, since it uses as much as digits as its factorization.

16373664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339 (or 6322 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 16373664 is about 4046.4384339812. The cubic root of 16373664 is about 253.9307476485.

It can be divided in two parts, 16 and 373664, that added together give a triangular number (373680 = T₈₆₄).

The spelling of 16373664 in words is "sixteen million, three hundred seventy-three thousand, six hundred sixty-four".