621060621 has 4 divisors (see below), whose sum is σ = 828080832. Its totient is φ = 414040412.

The previous prime is 621060611. The next prime is 621060623. The reversal of 621060621 is 126060126.

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 621060621 - 2¹⁰ = 621059597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621060591 and 621060600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621060623) 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, 103510101 + ... + 103510106.

It is an arithmetic number, because the mean of its divisors is an integer number (207020208).

Almost surely, 2^621060621 is an apocalyptic number.

It is an amenable number.

621060621 is a deficient number, since it is larger than the sum of its proper divisors (207020211).

621060621 is a wasteful number, since it uses less digits than its factorization.

621060621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207020210.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 621060621 is about 24921.0878775386. The cubic root of 621060621 is about 853.1878544145.

The spelling of 621060621 in words is "six hundred twenty-one million, sixty thousand, six hundred twenty-one".