5640867901 has 4 divisors (see below), whose sum is σ = 5641034400. Its totient is φ = 5640701404.

The previous prime is 5640867851. The next prime is 5640867943. The reversal of 5640867901 is 1097680465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5640867901 - 2⁷ = 5640867773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640867961) 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, 12241 + ... + 106918.

It is an arithmetic number, because the mean of its divisors is an integer number (1410258600).

Almost surely, 2^5640867901 is an apocalyptic number.

It is an amenable number.

5640867901 is a deficient number, since it is larger than the sum of its proper divisors (166499).

5640867901 is a wasteful number, since it uses less digits than its factorization.

5640867901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166498.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 5640867901 is about 75105.7115071817. The cubic root of 5640867901 is about 1780.1173912605.

The spelling of 5640867901 in words is "five billion, six hundred forty million, eight hundred sixty-seven thousand, nine hundred one".