597616921 has 4 divisors (see below), whose sum is σ = 651945744. Its totient is φ = 543288100.

The previous prime is 597616919. The next prime is 597616951. The reversal of 597616921 is 129616795.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 597616921 - 2¹ = 597616919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (597616951) 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, 27164395 + ... + 27164416.

It is an arithmetic number, because the mean of its divisors is an integer number (162986436).

Almost surely, 2^597616921 is an apocalyptic number.

It is an amenable number.

597616921 is a deficient number, since it is larger than the sum of its proper divisors (54328823).

597616921 is a wasteful number, since it uses less digits than its factorization.

597616921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54328822.

The product of its digits is 204120, while the sum is 46.

The square root of 597616921 is about 24446.2046338486. The cubic root of 597616921 is about 842.3145355125.

The spelling of 597616921 in words is "five hundred ninety-seven million, six hundred sixteen thousand, nine hundred twenty-one".