1661460604 has 6 divisors (see below), whose sum is σ = 2907556064. Its totient is φ = 830730300.

The previous prime is 1661460571. The next prime is 1661460611. The reversal of 1661460604 is 4060641661.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1661460604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207682572 + ... + 207682579.

Almost surely, 2^1661460604 is an apocalyptic number.

It is an amenable number.

1661460604 is a deficient number, since it is larger than the sum of its proper divisors (1246095460).

1661460604 is a wasteful number, since it uses less digits than its factorization.

1661460604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415365155 (or 415365153 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1661460604 is about 40761.0181914044. The cubic root of 1661460604 is about 1184.3953199281.

The spelling of 1661460604 in words is "one billion, six hundred sixty-one million, four hundred sixty thousand, six hundred four".