641233646 has 8 divisors (see below), whose sum is σ = 962000064. Its totient is φ = 320566960.

The previous prime is 641233639. The next prime is 641233657. The reversal of 641233646 is 646332146.

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

It is a super-2 number, since 2×641233646² = 822361177524906632, which contains 22 as substring.

It is a congruent number.

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, 5975 + ... + 36306.

It is an arithmetic number, because the mean of its divisors is an integer number (120250008).

Almost surely, 2^641233646 is an apocalyptic number.

641233646 is a deficient number, since it is larger than the sum of its proper divisors (320766418).

641233646 is a wasteful number, since it uses less digits than its factorization.

641233646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49866.

The product of its digits is 62208, while the sum is 35.

The square root of 641233646 is about 25322.5916130241. The cubic root of 641233646 is about 862.3272309831.

The spelling of 641233646 in words is "six hundred forty-one million, two hundred thirty-three thousand, six hundred forty-six".