641042465 has 8 divisors (see below), whose sum is σ = 879144000. Its totient is φ = 439571952.

The previous prime is 641042431. The next prime is 641042491. The reversal of 641042465 is 564240146.

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

It is a cyclic number.

It is not a de Polignac number, because 641042465 - 2¹² = 641038369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9157715 + ... + 9157784.

It is an arithmetic number, because the mean of its divisors is an integer number (109893000).

Almost surely, 2^641042465 is an apocalyptic number.

It is an amenable number.

641042465 is a deficient number, since it is larger than the sum of its proper divisors (238101535).

641042465 is a wasteful number, since it uses less digits than its factorization.

641042465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18315511.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 641042465 is about 25318.8164217840. The cubic root of 641042465 is about 862.2415227704.

The spelling of 641042465 in words is "six hundred forty-one million, forty-two thousand, four hundred sixty-five".