1662697474 has 16 divisors (see below), whose sum is σ = 2562761088. Its totient is φ = 808661232.

The previous prime is 1662697471. The next prime is 1662697483. The reversal of 1662697474 is 4747962661.

It is not an unprimeable number, because it can be changed into a prime (1662697471) 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, 38937 + ... + 69580.

It is an arithmetic number, because the mean of its divisors is an integer number (160172568).

Almost surely, 2^1662697474 is an apocalyptic number.

1662697474 is a deficient number, since it is larger than the sum of its proper divisors (900063614).

1662697474 is a wasteful number, since it uses less digits than its factorization.

1662697474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108729.

The product of its digits is 3048192, while the sum is 52.

The square root of 1662697474 is about 40776.1875854033. The cubic root of 1662697474 is about 1184.6891536913.

The spelling of 1662697474 in words is "one billion, six hundred sixty-two million, six hundred ninety-seven thousand, four hundred seventy-four".