1372906 has 4 divisors (see below), whose sum is σ = 2059362. Its totient is φ = 686452.

The previous prime is 1372879. The next prime is 1372913. The reversal of 1372906 is 6092731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1288225 + 84681 = 1135^2 + 291^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343225 + ... + 343228.

2^1372906 is an apocalyptic number.

1372906 is a deficient number, since it is larger than the sum of its proper divisors (686456).

1372906 is an equidigital number, since it uses as much as digits as its factorization.

1372906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686455.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1372906 is about 1171.7107151511. The cubic root of 1372906 is about 111.1425271905.

It can be divided in two parts, 1372 and 906, that added together give a triangular number (2278 = T₆₇).

The spelling of 1372906 in words is "one million, three hundred seventy-two thousand, nine hundred six".