654651072 has 140 divisors (see below), whose sum is σ = 1951731936. Its totient is φ = 216967680.

The previous prime is 654651029. The next prime is 654651073. The reversal of 654651072 is 270156456.

It is a happy number.

654651072 is a `hidden beast` number, since 6 + 546 + 5 + 107 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (654651073) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1518697 + ... + 1519127.

Almost surely, 2^654651072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654651072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (975865968).

654651072 is an abundant number, since it is smaller than the sum of its proper divisors (1297080864).

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

654651072 is a wasteful number, since it uses less digits than its factorization.

654651072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 654651072 is about 25586.1500034687. The cubic root of 654651072 is about 868.3003200998.

The spelling of 654651072 in words is "six hundred fifty-four million, six hundred fifty-one thousand, seventy-two".