641436698 has 8 divisors (see below), whose sum is σ = 1099605792. Its totient is φ = 274901436.

The previous prime is 641436689. The next prime is 641436721. The reversal of 641436698 is 896634146.

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

It is a super-2 number, since 2×641436698² = 822882075082286408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22908440 + ... + 22908467.

It is an arithmetic number, because the mean of its divisors is an integer number (137450724).

Almost surely, 2^641436698 is an apocalyptic number.

641436698 is a deficient number, since it is larger than the sum of its proper divisors (458169094).

641436698 is a wasteful number, since it uses less digits than its factorization.

641436698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45816916.

The product of its digits is 746496, while the sum is 47.

The square root of 641436698 is about 25326.6006009492. The cubic root of 641436698 is about 862.4182424219.

The spelling of 641436698 in words is "six hundred forty-one million, four hundred thirty-six thousand, six hundred ninety-eight".