1606654465 has 16 divisors (see below), whose sum is σ = 2079354816. Its totient is φ = 1184702400.

The previous prime is 1606654457. The next prime is 1606654477. The reversal of 1606654465 is 5644566061.

It is not a de Polignac number, because 1606654465 - 2³ = 1606654457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27030 + ... + 62800.

It is an arithmetic number, because the mean of its divisors is an integer number (129959676).

Almost surely, 2^1606654465 is an apocalyptic number.

It is an amenable number.

1606654465 is a deficient number, since it is larger than the sum of its proper divisors (472700351).

1606654465 is a wasteful number, since it uses less digits than its factorization.

1606654465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36480.

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 1606654465 is about 40083.0945037930. The cubic root of 1606654465 is about 1171.2263336710.

The spelling of 1606654465 in words is "one billion, six hundred six million, six hundred fifty-four thousand, four hundred sixty-five".