652638545 has 32 divisors (see below), whose sum is σ = 860775552. Its totient is φ = 472131072.

The previous prime is 652638541. The next prime is 652638557. The reversal of 652638545 is 545836256.

It is a cyclic number.

It is not a de Polignac number, because 652638545 - 2² = 652638541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 652638496 and 652638505.

It is not an unprimeable number, because it can be changed into a prime (652638541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738674 + ... + 739556.

It is an arithmetic number, because the mean of its divisors is an integer number (26899236).

Almost surely, 2^652638545 is an apocalyptic number.

652638545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

652638545 is a deficient number, since it is larger than the sum of its proper divisors (208137007).

652638545 is a wasteful number, since it uses less digits than its factorization.

652638545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its digits is 864000, while the sum is 44.

The square root of 652638545 is about 25546.7912857956. The cubic root of 652638545 is about 867.4096310618.

The spelling of 652638545 in words is "six hundred fifty-two million, six hundred thirty-eight thousand, five hundred forty-five".