621471101 has 8 divisors (see below), whose sum is σ = 624785280. Its totient is φ = 618166368.

The previous prime is 621471061. The next prime is 621471107. The reversal of 621471101 is 101174126.

It is a happy number.

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 621471101 - 2¹⁰ = 621470077 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 (621471107) 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, 156620 + ... + 160538.

It is an arithmetic number, because the mean of its divisors is an integer number (78098160).

Almost surely, 2^621471101 is an apocalyptic number.

It is an amenable number.

621471101 is a deficient number, since it is larger than the sum of its proper divisors (3314179).

621471101 is a wasteful number, since it uses less digits than its factorization.

621471101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 621471101 is about 24929.3221127250. The cubic root of 621471101 is about 853.3757799354.

The spelling of 621471101 in words is "six hundred twenty-one million, four hundred seventy-one thousand, one hundred one".