621161104 has 10 divisors (see below), whose sum is σ = 1203499670. Its totient is φ = 310580544.

The previous prime is 621161083. The next prime is 621161117. The reversal of 621161104 is 401161126.

It can be written as a sum of positive squares in only one way, i.e., 529920400 + 91240704 = 23020^2 + 9552^2 .

It is a super-2 number, since 2×621161104² = 771682234244997632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19411269 + ... + 19411300.

It is an arithmetic number, because the mean of its divisors is an integer number (120349967).

Almost surely, 2^621161104 is an apocalyptic number.

It is an amenable number.

621161104 is a deficient number, since it is larger than the sum of its proper divisors (582338566).

621161104 is a wasteful number, since it uses less digits than its factorization.

621161104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38822577 (or 38822571 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 621161104 is about 24923.1038195486. The cubic root of 621161104 is about 853.2338650879.

Adding to 621161104 its sum of digits (22), we get a palindrome (621161126).

The spelling of 621161104 in words is "six hundred twenty-one million, one hundred sixty-one thousand, one hundred four".