621348697 has 4 divisors (see below), whose sum is σ = 654051280. Its totient is φ = 588646116.

The previous prime is 621348683. The next prime is 621348709. The reversal of 621348697 is 796843126.

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 a de Polignac number, because none of the positive numbers 2^k-621348697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621348617) 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, 16351263 + ... + 16351300.

It is an arithmetic number, because the mean of its divisors is an integer number (163512820).

Almost surely, 2^621348697 is an apocalyptic number.

It is an amenable number.

621348697 is a deficient number, since it is larger than the sum of its proper divisors (32702583).

621348697 is a wasteful number, since it uses less digits than its factorization.

621348697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32702582.

The product of its digits is 435456, while the sum is 46.

The square root of 621348697 is about 24926.8669712020. The cubic root of 621348697 is about 853.3197497261.

The spelling of 621348697 in words is "six hundred twenty-one million, three hundred forty-eight thousand, six hundred ninety-seven".