1872705 has 8 divisors (see below), whose sum is σ = 2996352. Its totient is φ = 998768.

The previous prime is 1872691. The next prime is 1872713. The reversal of 1872705 is 5072781.

It is a happy number.

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 1872705 - 2¹⁸ = 1610561 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62409 + ... + 62438.

It is an arithmetic number, because the mean of its divisors is an integer number (374544).

2^1872705 is an apocalyptic number.

1872705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1872705 is a deficient number, since it is larger than the sum of its proper divisors (1123647).

1872705 is a wasteful number, since it uses less digits than its factorization.

1872705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124855.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1872705 is about 1368.4681216601. The cubic root of 1872705 is about 123.2602724495.

The spelling of 1872705 in words is "one million, eight hundred seventy-two thousand, seven hundred five".