654023970 has 80 divisors (see below), whose sum is σ = 1762611840. Its totient is φ = 174008736.

The previous prime is 654023969. The next prime is 654023977. The reversal of 654023970 is 79320456.

654023970 is a `hidden beast` number, since 6 + 540 + 23 + 97 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (654023977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 581829 + ... + 582951.

It is an arithmetic number, because the mean of its divisors is an integer number (22032648).

Almost surely, 2^654023970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654023970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881305920).

654023970 is an abundant number, since it is smaller than the sum of its proper divisors (1108587870).

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

654023970 is a wasteful number, since it uses less digits than its factorization.

654023970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 654023970 is about 25573.8923513805. The cubic root of 654023970 is about 868.0229780421.

The spelling of 654023970 in words is "six hundred fifty-four million, twenty-three thousand, nine hundred seventy".