621365061 has 8 divisors (see below), whose sum is σ = 828724960. Its totient is φ = 414124272.

The previous prime is 621365053. The next prime is 621365089. The reversal of 621365061 is 160563126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 621365061 - 2³ = 621365053 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 (621365021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16795 + ... + 39048.

It is an arithmetic number, because the mean of its divisors is an integer number (103590620).

Almost surely, 2^621365061 is an apocalyptic number.

It is an amenable number.

621365061 is a deficient number, since it is larger than the sum of its proper divisors (207359899).

621365061 is a wasteful number, since it uses less digits than its factorization.

621365061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59555.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 621365061 is about 24927.1952092489. The cubic root of 621365061 is about 853.3272407436.

The spelling of 621365061 in words is "six hundred twenty-one million, three hundred sixty-five thousand, sixty-one".