641652646 has 8 divisors (see below), whose sum is σ = 970996824. Its totient is φ = 317987040.

The previous prime is 641652617. The next prime is 641652647. The reversal of 641652646 is 646256146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 641652599 and 641652608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641652647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419360 + ... + 1419811.

It is an arithmetic number, because the mean of its divisors is an integer number (121374603).

Almost surely, 2^641652646 is an apocalyptic number.

641652646 is a deficient number, since it is larger than the sum of its proper divisors (329344178).

641652646 is a wasteful number, since it uses less digits than its factorization.

641652646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839286.

The product of its digits is 207360, while the sum is 40.

The square root of 641652646 is about 25330.8635067974. The cubic root of 641652646 is about 862.5150129992.

The spelling of 641652646 in words is "six hundred forty-one million, six hundred fifty-two thousand, six hundred forty-six".