1001661674 has 8 divisors (see below), whose sum is σ = 1618068900. Its totient is φ = 462305376.

The previous prime is 1001661649. The next prime is 1001661721. The reversal of 1001661674 is 4761661001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 967521025 + 34140649 = 31105^2 + 5843^2 .

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

It is a super-2 number, since 2×1001661674² = 2006652218320964552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001661674.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19262699 + ... + 19262750.

Almost surely, 2^1001661674 is an apocalyptic number.

1001661674 is a deficient number, since it is larger than the sum of its proper divisors (616407226).

1001661674 is a wasteful number, since it uses less digits than its factorization.

1001661674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38525464.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1001661674 is about 31649.0390691408. The cubic root of 1001661674 is about 1000.5535848206.

The spelling of 1001661674 in words is "one billion, one million, six hundred sixty-one thousand, six hundred seventy-four".