1662456663 has 48 divisors (see below), whose sum is σ = 2872800000. Its totient is φ = 947391984.

The previous prime is 1662456589. The next prime is 1662456689. The reversal of 1662456663 is 3666542661.

It is not a de Polignac number, because 1662456663 - 2¹³ = 1662448471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662452663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 552838 + ... + 555836.

It is an arithmetic number, because the mean of its divisors is an integer number (59850000).

Almost surely, 2^1662456663 is an apocalyptic number.

1662456663 is a deficient number, since it is larger than the sum of its proper divisors (1210343337).

1662456663 is a wasteful number, since it uses less digits than its factorization.

1662456663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441 (or 3428 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 1662456663 is about 40773.2346398958. The cubic root of 1662456663 is about 1184.6319574869.

The spelling of 1662456663 in words is "one billion, six hundred sixty-two million, four hundred fifty-six thousand, six hundred sixty-three".