654644654 has 4 divisors (see below), whose sum is σ = 981966984. Its totient is φ = 327322326.

The previous prime is 654644633. The next prime is 654644657. The reversal of 654644654 is 456446456.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654644657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163661162 + ... + 163661165.

It is an arithmetic number, because the mean of its divisors is an integer number (245491746).

Almost surely, 2^654644654 is an apocalyptic number.

654644654 is a deficient number, since it is larger than the sum of its proper divisors (327322330).

654644654 is a wasteful number, since it uses less digits than its factorization.

654644654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327322329.

The product of its digits is 1382400, while the sum is 44.

The square root of 654644654 is about 25586.0245837449. The cubic root of 654644654 is about 868.2974825731.

The spelling of 654644654 in words is "six hundred fifty-four million, six hundred forty-four thousand, six hundred fifty-four".