26420664 has 32 divisors (see below), whose sum is σ = 67839120. Its totient is φ = 8568576.

The previous prime is 26420657. The next prime is 26420677. The reversal of 26420664 is 46602462.

It is a congruent number.

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, 13989 + ... + 15764.

Almost surely, 2^26420664 is an apocalyptic number.

26420664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26420664 is an abundant number, since it is smaller than the sum of its proper divisors (41418456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26420664 is a wasteful number, since it uses less digits than its factorization.

26420664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29799 (or 29795 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 26420664 is about 5140.1035009035. The cubic root of 26420664 is about 297.8387789106.

The spelling of 26420664 in words is "twenty-six million, four hundred twenty thousand, six hundred sixty-four".