1376623 has 2 divisors, whose sum is σ = 1376624. Its totient is φ = 1376622.

The previous prime is 1376621. The next prime is 1376653. The reversal of 1376623 is 3266731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1376623 - 2¹ = 1376621 is a prime.

Together with 1376621, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1376591 and 1376600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1376621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688311 + 688312.

It is an arithmetic number, because the mean of its divisors is an integer number (688312).

2^1376623 is an apocalyptic number.

1376623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376623 is an equidigital number, since it uses as much as digits as its factorization.

1376623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 1376623 is about 1173.2957853841. The cubic root of 1376623 is about 111.2427390792.

It can be divided in two parts, 13 and 76623, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 1376623 in words is "one million, three hundred seventy-six thousand, six hundred twenty-three".