654243408 has 120 divisors (see below), whose sum is σ = 2253550208. Its totient is φ = 172544256.

The previous prime is 654243383. The next prime is 654243439. The reversal of 654243408 is 804342456.

654243408 is a `hidden beast` number, since 6 + 5 + 4 + 243 + 408 = 666.

It is a super-2 number, since 2×654243408² = 856068873822908928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11860 + ... + 38067.

Almost surely, 2^654243408 is an apocalyptic number.

It is an amenable number.

654243408 is an abundant number, since it is smaller than the sum of its proper divisors (1599306800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654243408 is a wasteful number, since it uses less digits than its factorization.

654243408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49961 (or 49952 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 654243408 is about 25578.1822653605. The cubic root of 654243408 is about 868.1200468224.

The spelling of 654243408 in words is "six hundred fifty-four million, two hundred forty-three thousand, four hundred eight".