641242970 has 16 divisors (see below), whose sum is σ = 1214987040. Its totient is φ = 242997264.

The previous prime is 641242969. The next prime is 641242981. The reversal of 641242970 is 79242146.

641242970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641242970² = 822385093148841800, 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 641242970.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1687292 + ... + 1687671.

It is an arithmetic number, because the mean of its divisors is an integer number (75936690).

Almost surely, 2^641242970 is an apocalyptic number.

641242970 is a deficient number, since it is larger than the sum of its proper divisors (573744070).

641242970 is a wasteful number, since it uses less digits than its factorization.

641242970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374989.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 641242970 is about 25322.7757167337. The cubic root of 641242970 is about 862.3314105829.

The spelling of 641242970 in words is "six hundred forty-one million, two hundred forty-two thousand, nine hundred seventy".