601621657 has 16 divisors (see below), whose sum is σ = 755574400. Its totient is φ = 476004816.

The previous prime is 601621651. The next prime is 601621673. The reversal of 601621657 is 756126106.

It is a happy number.

It is not a de Polignac number, because 601621657 - 2²⁷ = 467403929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (601621651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63003 + ... + 71920.

It is an arithmetic number, because the mean of its divisors is an integer number (47223400).

Almost surely, 2^601621657 is an apocalyptic number.

It is an amenable number.

601621657 is a deficient number, since it is larger than the sum of its proper divisors (153952743).

601621657 is a wasteful number, since it uses less digits than its factorization.

601621657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134957 (or 134943 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 601621657 is about 24527.9770262449. The cubic root of 601621657 is about 844.1918475745.

The spelling of 601621657 in words is "six hundred one million, six hundred twenty-one thousand, six hundred fifty-seven".