26478661 has 8 divisors (see below), whose sum is σ = 29590848. Its totient is φ = 23484000.

The previous prime is 26478659. The next prime is 26478679. The reversal of 26478661 is 16687462.

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 26478661 - 2¹ = 26478659 is a prime.

It is a super-2 number, since 2×26478661² = 1402238976705842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26478691) 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, 28905 + ... + 29806.

It is an arithmetic number, because the mean of its divisors is an integer number (3698856).

Almost surely, 2^26478661 is an apocalyptic number.

It is an amenable number.

26478661 is a deficient number, since it is larger than the sum of its proper divisors (3112187).

26478661 is a wasteful number, since it uses less digits than its factorization.

26478661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58763.

The product of its digits is 96768, while the sum is 40.

The square root of 26478661 is about 5145.7420261805. The cubic root of 26478661 is about 298.0565520348.

The spelling of 26478661 in words is "twenty-six million, four hundred seventy-eight thousand, six hundred sixty-one".