641079722 has 32 divisors (see below), whose sum is σ = 1043755200. Its totient is φ = 294357888.

The previous prime is 641079689. The next prime is 641079739. The reversal of 641079722 is 227970146.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161708 + ... + 165624.

It is an arithmetic number, because the mean of its divisors is an integer number (32617350).

Almost surely, 2^641079722 is an apocalyptic number.

641079722 is a deficient number, since it is larger than the sum of its proper divisors (402675478).

641079722 is a wasteful number, since it uses less digits than its factorization.

641079722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 641079722 is about 25319.5521682355. The cubic root of 641079722 is about 862.2582267652.

The spelling of 641079722 in words is "six hundred forty-one million, seventy-nine thousand, seven hundred twenty-two".