5642657 has 4 divisors (see below), whose sum is σ = 5974596. Its totient is φ = 5310720.

The previous prime is 5642653. The next prime is 5642669. The reversal of 5642657 is 7562465.

5642657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7562465 = 5 ⋅1512493.

It can be written as a sum of positive squares in 2 ways, for example, as 5125696 + 516961 = 2264^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 5642657 - 2² = 5642653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5642653) 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, 165944 + ... + 165977.

It is an arithmetic number, because the mean of its divisors is an integer number (1493649).

Almost surely, 2^5642657 is an apocalyptic number.

It is an amenable number.

5642657 is a deficient number, since it is larger than the sum of its proper divisors (331939).

5642657 is a wasteful number, since it uses less digits than its factorization.

5642657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331938.

The product of its digits is 50400, while the sum is 35.

The square root of 5642657 is about 2375.4277509535. The cubic root of 5642657 is about 178.0305569726.

The spelling of 5642657 in words is "five million, six hundred forty-two thousand, six hundred fifty-seven".