1372000661 has 2 divisors, whose sum is σ = 1372000662. Its totient is φ = 1372000660.

The previous prime is 1372000633. The next prime is 1372000717. The reversal of 1372000661 is 1660002731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1364194225 + 7806436 = 36935^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372000661 - 2¹⁴ = 1371984277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1372000661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372000631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686000330 + 686000331.

It is an arithmetic number, because the mean of its divisors is an integer number (686000331).

Almost surely, 2^1372000661 is an apocalyptic number.

It is an amenable number.

1372000661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372000661 is an equidigital number, since it uses as much as digits as its factorization.

1372000661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1372000661 is about 37040.5272775645. The cubic root of 1372000661 is about 1111.1809148253.

The spelling of 1372000661 in words is "one billion, three hundred seventy-two million, six hundred sixty-one", and thus it is an aban number.