331664501 has 8 divisors (see below), whose sum is σ = 384384384. Its totient is φ = 280279440.

The previous prime is 331664467. The next prime is 331664521. The reversal of 331664501 is 105466133.

It is a happy number.

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

It is not a de Polignac number, because 331664501 - 2¹⁴ = 331648117 is a prime.

It is a super-2 number, since 2×331664501² = 220002682447158002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331664521) 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, 333170 + ... + 334163.

It is an arithmetic number, because the mean of its divisors is an integer number (48048048).

Almost surely, 2^331664501 is an apocalyptic number.

It is an amenable number.

331664501 is a deficient number, since it is larger than the sum of its proper divisors (52719883).

331664501 is an equidigital number, since it uses as much as digits as its factorization.

331664501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667411.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 331664501 is about 18211.6583813776. The cubic root of 331664501 is about 692.2022342363.

The spelling of 331664501 in words is "three hundred thirty-one million, six hundred sixty-four thousand, five hundred one".