1690674970 has 8 divisors (see below), whose sum is σ = 3043214964. Its totient is φ = 676269984.

The previous prime is 1690674943. The next prime is 1690674977. The reversal of 1690674970 is 794760961.

It can be written as a sum of positive squares in 2 ways, for example, as 1603121521 + 87553449 = 40039^2 + 9357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1690674977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84533739 + ... + 84533758.

Almost surely, 2^1690674970 is an apocalyptic number.

1690674970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1690674970 is a deficient number, since it is larger than the sum of its proper divisors (1352539994).

1690674970 is a wasteful number, since it uses less digits than its factorization.

1690674970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169067504.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 1690674970 is about 41117.8181570958. The cubic root of 1690674970 is about 1191.2969805598.

The spelling of 1690674970 in words is "one billion, six hundred ninety million, six hundred seventy-four thousand, nine hundred seventy".