1351712661 has 8 divisors (see below), whose sum is σ = 1940920800. Its totient is φ = 831823152.

The previous prime is 1351712639. The next prime is 1351712693. The reversal of 1351712661 is 1662171531.

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

It is not a de Polignac number, because 1351712661 - 2⁵ = 1351712629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351712261) 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, 17329611 + ... + 17329688.

It is an arithmetic number, because the mean of its divisors is an integer number (242615100).

Almost surely, 2^1351712661 is an apocalyptic number.

It is an amenable number.

1351712661 is a deficient number, since it is larger than the sum of its proper divisors (589208139).

1351712661 is a wasteful number, since it uses less digits than its factorization.

1351712661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34659315.

The product of its digits is 7560, while the sum is 33.

The square root of 1351712661 is about 36765.6451187790. The cubic root of 1351712661 is about 1105.6766222435.

The spelling of 1351712661 in words is "one billion, three hundred fifty-one million, seven hundred twelve thousand, six hundred sixty-one".