1742870661 has 24 divisors (see below), whose sum is σ = 2704875264. Its totient is φ = 995319360.

The previous prime is 1742870653. The next prime is 1742870669. The reversal of 1742870661 is 1660782471.

It is an interprime number because it is at equal distance from previous prime (1742870653) and next prime (1742870669).

It is not a de Polignac number, because 1742870661 - 2³ = 1742870653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1742870669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368236 + ... + 372938.

It is an arithmetic number, because the mean of its divisors is an integer number (112703136).

Almost surely, 2^1742870661 is an apocalyptic number.

It is an amenable number.

1742870661 is a deficient number, since it is larger than the sum of its proper divisors (962004603).

1742870661 is a wasteful number, since it uses less digits than its factorization.

1742870661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241 (or 7234 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 1742870661 is about 41747.7024637285. The cubic root of 1742870661 is about 1203.4324551540.

The spelling of 1742870661 in words is "one billion, seven hundred forty-two million, eight hundred seventy thousand, six hundred sixty-one".