841561996 has 24 divisors (see below), whose sum is σ = 1676473344. Its totient is φ = 365896080.

The previous prime is 841561993. The next prime is 841562021. The reversal of 841561996 is 699165148.

It is a super-2 number, since 2×841561996² = 1416453186223008032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (841561993) 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, 414780 + ... + 416803.

It is an arithmetic number, because the mean of its divisors is an integer number (69853056).

Almost surely, 2^841561996 is an apocalyptic number.

It is an amenable number.

841561996 is a deficient number, since it is larger than the sum of its proper divisors (834911348).

841561996 is a wasteful number, since it uses less digits than its factorization.

841561996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831621 (or 831619 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 841561996 is about 29009.6879679875. The cubic root of 841561996 is about 944.1232767164.

The spelling of 841561996 in words is "eight hundred forty-one million, five hundred sixty-one thousand, nine hundred ninety-six".