654404045 has 8 divisors (see below), whose sum is σ = 785435640. Its totient is φ = 523422720.

The previous prime is 654404041. The next prime is 654404071. The reversal of 654404045 is 540404456.

It can be written as a sum of positive squares in 4 ways, for example, as 150356644 + 504047401 = 12262^2 + 22451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 654404045 - 2² = 654404041 is a prime.

It is a super-2 number, since 2×654404045² = 856489308224724050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654404041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27965 + ... + 45725.

It is an arithmetic number, because the mean of its divisors is an integer number (98179455).

Almost surely, 2^654404045 is an apocalyptic number.

It is an amenable number.

654404045 is a deficient number, since it is larger than the sum of its proper divisors (131031595).

654404045 is a wasteful number, since it uses less digits than its factorization.

654404045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25135.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 654404045 is about 25581.3221902231. The cubic root of 654404045 is about 868.1910911191.

The spelling of 654404045 in words is "six hundred fifty-four million, four hundred four thousand, forty-five".