654938490 has 64 divisors (see below), whose sum is σ = 1616630400. Its totient is φ = 169737984.

The previous prime is 654938489. The next prime is 654938509. The reversal of 654938490 is 94839456.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171421 + ... + 175199.

It is an arithmetic number, because the mean of its divisors is an integer number (25259850).

Almost surely, 2^654938490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654938490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (808315200).

654938490 is an abundant number, since it is smaller than the sum of its proper divisors (961691910).

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

654938490 is a wasteful number, since it uses less digits than its factorization.

654938490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 654938490 is about 25591.7660586369. The cubic root of 654938490 is about 868.4273743622.

The spelling of 654938490 in words is "six hundred fifty-four million, nine hundred thirty-eight thousand, four hundred ninety".