1375961 has 8 divisors (see below), whose sum is σ = 1461600. Its totient is φ = 1291680.

The previous prime is 1375951. The next prime is 1375981. The reversal of 1375961 is 1695731.

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

It is a cyclic number.

It is not a de Polignac number, because 1375961 - 2¹⁰ = 1374937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375901) 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, 2381 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (182700).

2^1375961 is an apocalyptic number.

It is an amenable number.

1375961 is a deficient number, since it is larger than the sum of its proper divisors (85639).

1375961 is a wasteful number, since it uses less digits than its factorization.

1375961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679.

The product of its digits is 5670, while the sum is 32.

The square root of 1375961 is about 1173.0136401594. The cubic root of 1375961 is about 111.2249044939.

Subtracting from 1375961 its sum of digits (32), we obtain a square (1375929 = 1173²).

The spelling of 1375961 in words is "one million, three hundred seventy-five thousand, nine hundred sixty-one".