654213256 has 8 divisors (see below), whose sum is σ = 1226649870. Its totient is φ = 327106624.

The previous prime is 654213253. The next prime is 654213269. The reversal of 654213256 is 652312456.

It can be written as a sum of positive squares in only one way, i.e., 653620356 + 592900 = 25566^2 + 770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×654213256² = 855989968652243072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (654213251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40888321 + ... + 40888336.

Almost surely, 2^654213256 is an apocalyptic number.

It is an amenable number.

654213256 is a deficient number, since it is larger than the sum of its proper divisors (572436614).

654213256 is a wasteful number, since it uses less digits than its factorization.

654213256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81776663 (or 81776659 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 654213256 is about 25577.5928499927. The cubic root of 654213256 is about 868.1067103193.

The spelling of 654213256 in words is "six hundred fifty-four million, two hundred thirteen thousand, two hundred fifty-six".