621342797 has 16 divisors (see below), whose sum is σ = 646558848. Its totient is φ = 596756160.

The previous prime is 621342793. The next prime is 621342829. The reversal of 621342797 is 797243126.

It is a cyclic number.

It is not a de Polignac number, because 621342797 - 2² = 621342793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621342793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612863 + ... + 613875.

It is an arithmetic number, because the mean of its divisors is an integer number (40409928).

Almost surely, 2^621342797 is an apocalyptic number.

It is an amenable number.

621342797 is a deficient number, since it is larger than the sum of its proper divisors (25216051).

621342797 is a wasteful number, since it uses less digits than its factorization.

621342797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its digits is 127008, while the sum is 41.

The square root of 621342797 is about 24926.7486247204. The cubic root of 621342797 is about 853.3170488259.

The spelling of 621342797 in words is "six hundred twenty-one million, three hundred forty-two thousand, seven hundred ninety-seven".