601665331 has 4 divisors (see below), whose sum is σ = 615657592. Its totient is φ = 587673072.

The previous prime is 601665319. The next prime is 601665347. The reversal of 601665331 is 133566106.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 601665331 - 2⁵ = 601665299 is a prime.

It is a super-2 number, since 2×601665331² = 724002341054679122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 601665293 and 601665302.

It is not an unprimeable number, because it can be changed into a prime (601665301) 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, 6996066 + ... + 6996151.

It is an arithmetic number, because the mean of its divisors is an integer number (153914398).

Almost surely, 2^601665331 is an apocalyptic number.

601665331 is a deficient number, since it is larger than the sum of its proper divisors (13992261).

601665331 is a wasteful number, since it uses less digits than its factorization.

601665331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13992260.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 601665331 is about 24528.8672995717. The cubic root of 601665331 is about 844.2122747772.

The spelling of 601665331 in words is "six hundred one million, six hundred sixty-five thousand, three hundred thirty-one".