1372621 has 2 divisors, whose sum is σ = 1372622. Its totient is φ = 1372620.

The previous prime is 1372607. The next prime is 1372627. The reversal of 1372621 is 1262731.

1372621 is nontrivially palindromic in base 8.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 3721 = 1170^2 + 61^2 .

It is an emirp because it is prime and its reverse (1262731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1372621 - 2⁷ = 1372493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1372592 and 1372601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686310 + 686311.

It is an arithmetic number, because the mean of its divisors is an integer number (686311).

2^1372621 is an apocalyptic number.

It is an amenable number.

1372621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372621 is an equidigital number, since it uses as much as digits as its factorization.

1372621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 1372621 is about 1171.5890917894. The cubic root of 1372621 is about 111.1348360079.

The spelling of 1372621 in words is "one million, three hundred seventy-two thousand, six hundred twenty-one".