641075455 has 8 divisors (see below), whose sum is σ = 777934800. Its totient is φ = 507097536.

The previous prime is 641075453. The next prime is 641075507. The reversal of 641075455 is 554570146.

It is a happy number.

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 641075455 - 2¹ = 641075453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641075453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719865 + ... + 720754.

It is an arithmetic number, because the mean of its divisors is an integer number (97241850).

Almost surely, 2^641075455 is an apocalyptic number.

641075455 is a deficient number, since it is larger than the sum of its proper divisors (136859345).

641075455 is a wasteful number, since it uses less digits than its factorization.

641075455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440713.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 641075455 is about 25319.4679051516. The cubic root of 641075455 is about 862.2563137093.

The spelling of 641075455 in words is "six hundred forty-one million, seventy-five thousand, four hundred fifty-five".