641420246 has 16 divisors (see below), whose sum is σ = 978874848. Its totient is φ = 315139200.

The previous prime is 641420239. The next prime is 641420303. The reversal of 641420246 is 642024146.

It is a happy number.

It is a super-2 number, since 2×641420246² = 822839863957401032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 164111 + ... + 167973.

It is an arithmetic number, because the mean of its divisors is an integer number (61179678).

Almost surely, 2^641420246 is an apocalyptic number.

641420246 is a deficient number, since it is larger than the sum of its proper divisors (337454602).

641420246 is a wasteful number, since it uses less digits than its factorization.

641420246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 641420246 is about 25326.2758020203. The cubic root of 641420246 is about 862.4108690644.

The spelling of 641420246 in words is "six hundred forty-one million, four hundred twenty thousand, two hundred forty-six".