26561607 has 12 divisors (see below), whose sum is σ = 35822376. Its totient is φ = 17506560.

The previous prime is 26561603. The next prime is 26561609. The reversal of 26561607 is 70616562.

It is not a de Polignac number, because 26561607 - 2² = 26561603 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26561603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27757 + ... + 28697.

It is an arithmetic number, because the mean of its divisors is an integer number (2985198).

Almost surely, 2^26561607 is an apocalyptic number.

26561607 is a deficient number, since it is larger than the sum of its proper divisors (9260769).

26561607 is an frugal number, since it uses more digits than its factorization.

26561607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 26561607 is about 5153.7953975687. The cubic root of 26561607 is about 298.3674543193.

The spelling of 26561607 in words is "twenty-six million, five hundred sixty-one thousand, six hundred seven".