26621985 has 16 divisors (see below), whose sum is σ = 45872064. Its totient is φ = 13106112.

The previous prime is 26621939. The next prime is 26622041. The reversal of 26621985 is 58912662.

It is not a de Polignac number, because 26621985 - 2¹² = 26617889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68067 + ... + 68456.

It is an arithmetic number, because the mean of its divisors is an integer number (2867004).

Almost surely, 2^26621985 is an apocalyptic number.

It is an amenable number.

26621985 is a deficient number, since it is larger than the sum of its proper divisors (19250079).

26621985 is a wasteful number, since it uses less digits than its factorization.

26621985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136544.

The product of its digits is 51840, while the sum is 39.

The square root of 26621985 is about 5159.6496974116. The cubic root of 26621985 is about 298.5933592924.

The spelling of 26621985 in words is "twenty-six million, six hundred twenty-one thousand, nine hundred eighty-five".