1662768674 has 16 divisors (see below), whose sum is σ = 3018135168. Its totient is φ = 670696512.

The previous prime is 1662768593. The next prime is 1662768697. The reversal of 1662768674 is 4768672661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3492974 + ... + 3493449.

It is an arithmetic number, because the mean of its divisors is an integer number (188633448).

Almost surely, 2^1662768674 is an apocalyptic number.

1662768674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1662768674 is a deficient number, since it is larger than the sum of its proper divisors (1355366494).

1662768674 is a wasteful number, since it uses less digits than its factorization.

1662768674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6986449.

The product of its digits is 4064256, while the sum is 53.

The square root of 1662768674 is about 40777.0606346264. The cubic root of 1662768674 is about 1184.7060636955.

The spelling of 1662768674 in words is "one billion, six hundred sixty-two million, seven hundred sixty-eight thousand, six hundred seventy-four".