1372861 has 8 divisors (see below), whose sum is σ = 1605824. Its totient is φ = 1149120.

The previous prime is 1372849. The next prime is 1372867. The reversal of 1372861 is 1682731.

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

It is not a de Polignac number, because 1372861 - 2⁵ = 1372829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1980 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (200728).

2^1372861 is an apocalyptic number.

It is an amenable number.

1372861 is a deficient number, since it is larger than the sum of its proper divisors (232963).

1372861 is an equidigital number, since it uses as much as digits as its factorization.

1372861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611.

The product of its digits is 2016, while the sum is 28.

The square root of 1372861 is about 1171.6915123018. The cubic root of 1372861 is about 111.1413128640.

The spelling of 1372861 in words is "one million, three hundred seventy-two thousand, eight hundred sixty-one".