621102045 has 8 divisors (see below), whose sum is σ = 993763296. Its totient is φ = 331254416.

The previous prime is 621102037. The next prime is 621102059. The reversal of 621102045 is 540201126.

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

It is a cyclic number.

It is not a de Polignac number, because 621102045 - 2³ = 621102037 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20703387 + ... + 20703416.

It is an arithmetic number, because the mean of its divisors is an integer number (124220412).

Almost surely, 2^621102045 is an apocalyptic number.

It is an amenable number.

621102045 is a deficient number, since it is larger than the sum of its proper divisors (372661251).

621102045 is a wasteful number, since it uses less digits than its factorization.

621102045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41406811.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 621102045 is about 24921.9189670459. The cubic root of 621102045 is about 853.2068228623.

The spelling of 621102045 in words is "six hundred twenty-one million, one hundred two thousand, forty-five".