26061997 has 6 divisors (see below), whose sum is σ = 28221162. Its totient is φ = 24057072.

The previous prime is 26061991. The next prime is 26062007. The reversal of 26061997 is 79916062.

It can be written as a sum of positive squares in 3 ways, for example, as 367236 + 25694761 = 606^2 + 5069^2 .

It is not a de Polignac number, because 26061997 - 2³ = 26061989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26061991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76938 + ... + 77275.

It is an arithmetic number, because the mean of its divisors is an integer number (4703527).

Almost surely, 2^26061997 is an apocalyptic number.

It is an amenable number.

26061997 is a deficient number, since it is larger than the sum of its proper divisors (2159165).

26061997 is a wasteful number, since it uses less digits than its factorization.

26061997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154239 (or 154226 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 26061997 is about 5105.0951998959. The cubic root of 26061997 is about 296.4848889921.

The spelling of 26061997 in words is "twenty-six million, sixty-one thousand, nine hundred ninety-seven".