1660426701 has 8 divisors (see below), whose sum is σ = 2330423520. Its totient is φ = 1048690512.

The previous prime is 1660426693. The next prime is 1660426709. The reversal of 1660426701 is 1076240661.

1660426701 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1660426693) and next prime (1660426709).

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

It is not a de Polignac number, because 1660426701 - 2³ = 1660426693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660426709) 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, 14565090 + ... + 14565203.

It is an arithmetic number, because the mean of its divisors is an integer number (291302940).

Almost surely, 2^1660426701 is an apocalyptic number.

It is an amenable number.

1660426701 is a deficient number, since it is larger than the sum of its proper divisors (669996819).

1660426701 is a wasteful number, since it uses less digits than its factorization.

1660426701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29130315.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1660426701 is about 40748.3337205339. Note that the first 3 decimals coincide. The cubic root of 1660426701 is about 1184.1495915680.

The spelling of 1660426701 in words is "one billion, six hundred sixty million, four hundred twenty-six thousand, seven hundred one".