641462855 has 16 divisors (see below), whose sum is σ = 843264000. Its totient is φ = 464556960.

The previous prime is 641462851. The next prime is 641462911. The reversal of 641462855 is 558264146.

It is not a de Polignac number, because 641462855 - 2² = 641462851 is a prime.

It is a super-2 number, since 2×641462855² = 822949188689502050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641462851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11255 + ... + 37544.

It is an arithmetic number, because the mean of its divisors is an integer number (52704000).

Almost surely, 2^641462855 is an apocalyptic number.

641462855 is a deficient number, since it is larger than the sum of its proper divisors (201801145).

641462855 is a wasteful number, since it uses less digits than its factorization.

641462855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49054.

The product of its digits is 230400, while the sum is 41.

The square root of 641462855 is about 25327.1169895036. The cubic root of 641462855 is about 862.4299650478.

The spelling of 641462855 in words is "six hundred forty-one million, four hundred sixty-two thousand, eight hundred fifty-five".