26970505 has 8 divisors (see below), whose sum is σ = 32601672. Its totient is φ = 21418368.

The previous prime is 26970487. The next prime is 26970509. The reversal of 26970505 is 50507962.

It can be written as a sum of positive squares in 4 ways, for example, as 11002489 + 15968016 = 3317^2 + 3996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26970505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26970509) 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, 19002 + ... + 20371.

It is an arithmetic number, because the mean of its divisors is an integer number (4075209).

Almost surely, 2^26970505 is an apocalyptic number.

It is an amenable number.

26970505 is a deficient number, since it is larger than the sum of its proper divisors (5631167).

26970505 is a wasteful number, since it uses less digits than its factorization.

26970505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39515.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 26970505 is about 5193.3134894786. The cubic root of 26970505 is about 299.8907194566.

The spelling of 26970505 in words is "twenty-six million, nine hundred seventy thousand, five hundred five".