255640654 has 8 divisors (see below), whose sum is σ = 383531688. Its totient is φ = 127796760.

The previous prime is 255640591. The next prime is 255640657. The reversal of 255640654 is 456046552.

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

It is a super-3 number, since 3×255640654³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255640657) 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, 9369 + ... + 24475.

It is an arithmetic number, because the mean of its divisors is an integer number (47941461).

Almost surely, 2^255640654 is an apocalyptic number.

255640654 is a deficient number, since it is larger than the sum of its proper divisors (127891034).

255640654 is a wasteful number, since it uses less digits than its factorization.

255640654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23570.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 255640654 is about 15988.7664940107. The cubic root of 255640654 is about 634.6631846788.

The spelling of 255640654 in words is "two hundred fifty-five million, six hundred forty thousand, six hundred fifty-four".