654623747 has 4 divisors (see below), whose sum is σ = 661979160. Its totient is φ = 647268336.

The previous prime is 654623741. The next prime is 654623771. The reversal of 654623747 is 747326456.

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

It is a cyclic number.

It is not a de Polignac number, because 654623747 - 2⁴ = 654623731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654623698 and 654623707.

It is not an unprimeable number, because it can be changed into a prime (654623741) 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, 3677573 + ... + 3677750.

It is an arithmetic number, because the mean of its divisors is an integer number (165494790).

Almost surely, 2^654623747 is an apocalyptic number.

654623747 is a deficient number, since it is larger than the sum of its proper divisors (7355413).

654623747 is an equidigital number, since it uses as much as digits as its factorization.

654623747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355412.

The product of its digits is 846720, while the sum is 44.

The square root of 654623747 is about 25585.6160175986. The cubic root of 654623747 is about 868.2882390399.

The spelling of 654623747 in words is "six hundred fifty-four million, six hundred twenty-three thousand, seven hundred forty-seven".