1654664607 has 12 divisors (see below), whose sum is σ = 2394447640. Its totient is φ = 1101089808.

The previous prime is 1654664603. The next prime is 1654664659. The reversal of 1654664607 is 7064664561.

It is not a de Polignac number, because 1654664607 - 2² = 1654664603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1654664603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163132 + ... + 172977.

Almost surely, 2^1654664607 is an apocalyptic number.

1654664607 is a deficient number, since it is larger than the sum of its proper divisors (739783033).

1654664607 is a wasteful number, since it uses less digits than its factorization.

1654664607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336662 (or 336659 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 1654664607 is about 40677.5688432827. The cubic root of 1654664607 is about 1182.7782394095.

The spelling of 1654664607 in words is "one billion, six hundred fifty-four million, six hundred sixty-four thousand, six hundred seven".