641369147 has 4 divisors (see below), whose sum is σ = 641491200. Its totient is φ = 641247096.

The previous prime is 641369107. The next prime is 641369161. The reversal of 641369147 is 741963146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641369147 is a prime.

It is a super-2 number, since 2×641369147² = 822708765447015218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641369107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52772 + ... + 63777.

It is an arithmetic number, because the mean of its divisors is an integer number (160372800).

Almost surely, 2^641369147 is an apocalyptic number.

641369147 is a deficient number, since it is larger than the sum of its proper divisors (122053).

641369147 is a wasteful number, since it uses less digits than its factorization.

641369147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122052.

The product of its digits is 108864, while the sum is 41.

The square root of 641369147 is about 25325.2669679907. The cubic root of 641369147 is about 862.3879670208.

The spelling of 641369147 in words is "six hundred forty-one million, three hundred sixty-nine thousand, one hundred forty-seven".