641202506 has 16 divisors (see below), whose sum is σ = 1099535424. Its totient is φ = 274718304.

The previous prime is 641202493. The next prime is 641202511. The reversal of 641202506 is 605202146.

It is a super-2 number, since 2×641202506² = 822281307401360072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73766 + ... + 81998.

It is an arithmetic number, because the mean of its divisors is an integer number (68720964).

Almost surely, 2^641202506 is an apocalyptic number.

641202506 is a deficient number, since it is larger than the sum of its proper divisors (458332918).

641202506 is a wasteful number, since it uses less digits than its factorization.

641202506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13805.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 641202506 is about 25321.9767395833. The cubic root of 641202506 is about 862.3132717942.

The spelling of 641202506 in words is "six hundred forty-one million, two hundred two thousand, five hundred six".