20870377 has 8 divisors (see below), whose sum is σ = 22885632. Its totient is φ = 18874800.

The previous prime is 20870371. The next prime is 20870389. The reversal of 20870377 is 77307802.

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 20870377 - 2⁷ = 20870249 is a prime.

It is a super-2 number, since 2×20870377² = 871145272244258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20870371) 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, 2649 + ... + 6982.

It is an arithmetic number, because the mean of its divisors is an integer number (2860704).

Almost surely, 2^20870377 is an apocalyptic number.

It is an amenable number.

20870377 is a deficient number, since it is larger than the sum of its proper divisors (2015255).

20870377 is a wasteful number, since it uses less digits than its factorization.

20870377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9839.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 20870377 is about 4568.4107740001. The cubic root of 20870377 is about 275.3235948314.

The spelling of 20870377 in words is "twenty million, eight hundred seventy thousand, three hundred seventy-seven".