26779797 has 48 divisors (see below), whose sum is σ = 46425600. Its totient is φ = 14683680.

The previous prime is 26779771. The next prime is 26779799. The reversal of 26779797 is 79797762.

26779797 = 14² + 15² + ... + 431².

It is not a de Polignac number, because 26779797 - 2⁶ = 26779733 is a prime.

It is a super-2 number, since 2×26779797² = 1434315054722418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26779799) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42954 + ... + 43572.

It is an arithmetic number, because the mean of its divisors is an integer number (967200).

Almost surely, 2^26779797 is an apocalyptic number.

It is an amenable number.

26779797 is a deficient number, since it is larger than the sum of its proper divisors (19645803).

26779797 is a wasteful number, since it uses less digits than its factorization.

26779797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 675 counting only the distinct ones).

The product of its digits is 2333772, while the sum is 54.

The square root of 26779797 is about 5174.9199993816. The cubic root of 26779797 is about 299.1822060693.

The spelling of 26779797 in words is "twenty-six million, seven hundred seventy-nine thousand, seven hundred ninety-seven".