26161663 has 8 divisors (see below), whose sum is σ = 28717056. Its totient is φ = 23635800.

The previous prime is 26161661. The next prime is 26161669. The reversal of 26161663 is 36616162.

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 26161663 - 2¹ = 26161661 is a prime.

It is a super-2 number, since 2×26161663² = 1368865221851138, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26161661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5503 + ... + 9088.

It is an arithmetic number, because the mean of its divisors is an integer number (3589632).

Almost surely, 2^26161663 is an apocalyptic number.

26161663 is a deficient number, since it is larger than the sum of its proper divisors (2555393).

26161663 is a wasteful number, since it uses less digits than its factorization.

26161663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14765.

The product of its digits is 7776, while the sum is 31.

The square root of 26161663 is about 5114.8473095489. The cubic root of 26161663 is about 296.8623463194.

The spelling of 26161663 in words is "twenty-six million, one hundred sixty-one thousand, six hundred sixty-three".