641601045 has 48 divisors (see below), whose sum is σ = 1134674112. Its totient is φ = 335301120.

The previous prime is 641601043. The next prime is 641601047. The reversal of 641601045 is 540106146.

641601045 is a `hidden beast` number, since 641 + 6 + 0 + 10 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (641601043) and next prime (641601047).

It is not a de Polignac number, because 641601045 - 2¹ = 641601043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641601043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 726174 + ... + 727056.

It is an arithmetic number, because the mean of its divisors is an integer number (23639044).

Almost surely, 2^641601045 is an apocalyptic number.

It is an amenable number.

641601045 is a deficient number, since it is larger than the sum of its proper divisors (493073067).

641601045 is a wasteful number, since it uses less digits than its factorization.

641601045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 641601045 is about 25329.8449462289. The cubic root of 641601045 is about 862.4918915432.

The spelling of 641601045 in words is "six hundred forty-one million, six hundred one thousand, forty-five".