326667996 has 18 divisors (see below), whose sum is σ = 825744192. Its totient is φ = 108889320.

The previous prime is 326667949. The next prime is 326668009. The reversal of 326667996 is 699766623.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×326667996² = 213423959221312032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4537020 + ... + 4537091.

Almost surely, 2^326667996 is an apocalyptic number.

326667996 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

326667996 is an abundant number, since it is smaller than the sum of its proper divisors (499076196).

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

326667996 is a wasteful number, since it uses less digits than its factorization.

326667996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9074121 (or 9074116 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 326667996 is about 18073.9590571629. The cubic root of 326667996 is about 688.7086369693.

The spelling of 326667996 in words is "three hundred twenty-six million, six hundred sixty-seven thousand, nine hundred ninety-six".