654378901 has 16 divisors (see below), whose sum is σ = 735594048. Its totient is φ = 576956800.

The previous prime is 654378887. The next prime is 654378913. The reversal of 654378901 is 109873456.

It is a cyclic number.

It is not a de Polignac number, because 654378901 - 2¹⁷ = 654247829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654378931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73830 + ... + 82216.

It is an arithmetic number, because the mean of its divisors is an integer number (45974628).

Almost surely, 2^654378901 is an apocalyptic number.

It is an amenable number.

654378901 is a deficient number, since it is larger than the sum of its proper divisors (81215147).

654378901 is a wasteful number, since it uses less digits than its factorization.

654378901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8612.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 654378901 is about 25580.8307331877. The cubic root of 654378901 is about 868.1799715482.

Subtracting from 654378901 its reverse (109873456), we obtain a palindrome (544505445).

The spelling of 654378901 in words is "six hundred fifty-four million, three hundred seventy-eight thousand, nine hundred one".