1654997656 has 32 divisors (see below), whose sum is σ = 3356463600. Its totient is φ = 760498560.

The previous prime is 1654997653. The next prime is 1654997657. The reversal of 1654997656 is 6567994561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1654997656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1654997653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10930 + ... + 58561.

Almost surely, 2^1654997656 is an apocalyptic number.

It is an amenable number.

1654997656 is an abundant number, since it is smaller than the sum of its proper divisors (1701465944).

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

1654997656 is a wasteful number, since it uses less digits than its factorization.

1654997656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69739 (or 69735 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 58.

The square root of 1654997656 is about 40681.6624045773. The cubic root of 1654997656 is about 1182.8575901697.

The spelling of 1654997656 in words is "one billion, six hundred fifty-four million, nine hundred ninety-seven thousand, six hundred fifty-six".