641377016 has 16 divisors (see below), whose sum is σ = 1374379440. Its totient is φ = 274875840.

The previous prime is 641377013. The next prime is 641377019. The reversal of 641377016 is 610773146.

641377016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (641377013) and next prime (641377019).

It is a super-2 number, since 2×641377016² = 822728953306128512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641377013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5726525 + ... + 5726636.

It is an arithmetic number, because the mean of its divisors is an integer number (85898715).

Almost surely, 2^641377016 is an apocalyptic number.

It is an amenable number.

641377016 is an abundant number, since it is smaller than the sum of its proper divisors (733002424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641377016 is a wasteful number, since it uses less digits than its factorization.

641377016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11453174 (or 11453170 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 641377016 is about 25325.4223261923. The cubic root of 641377016 is about 862.3914939045.

The spelling of 641377016 in words is "six hundred forty-one million, three hundred seventy-seven thousand, sixteen".