872045 has 8 divisors (see below), whose sum is σ = 1092096. Its totient is φ = 667216.

The previous prime is 872041. The next prime is 872057. The reversal of 872045 is 540278.

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

It is a cyclic number.

It is not a de Polignac number, because 872045 - 2² = 872041 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 (872041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3677 + ... + 3906.

It is an arithmetic number, because the mean of its divisors is an integer number (136512).

2⁸⁷²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

872045 is a deficient number, since it is larger than the sum of its proper divisors (220051).

872045 is a wasteful number, since it uses less digits than its factorization.

872045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 872045 is about 933.8334969362. The cubic root of 872045 is about 95.5387670063.

The spelling of 872045 in words is "eight hundred seventy-two thousand, forty-five".