641707146 has 48 divisors (see below), whose sum is σ = 1449635616. Its totient is φ = 204972768.

The previous prime is 641707127. The next prime is 641707147.

641707146 is a `hidden beast` number, since 641 + 7 + 0 + 7 + 1 + 4 + 6 = 666.

641707146 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×641707146² = 823576122454930632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641707146.

It is not an unprimeable number, because it can be changed into a prime (641707147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33201 + ... + 48843.

It is an arithmetic number, because the mean of its divisors is an integer number (30200742).

Almost surely, 2^641707146 is an apocalyptic number.

641707146 is an abundant number, since it is smaller than the sum of its proper divisors (807928470).

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

641707146 is a wasteful number, since it uses less digits than its factorization.

641707146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15747 (or 15744 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 641707146 is about 25331.9392467296. The cubic root of 641707146 is about 862.5394320976.

The spelling of 641707146 in words is "six hundred forty-one million, seven hundred seven thousand, one hundred forty-six".