26321668 has 6 divisors (see below), whose sum is σ = 46062926. Its totient is φ = 13160832.

The previous prime is 26321663. The next prime is 26321671. The reversal of 26321668 is 86612362.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22448644 + 3873024 = 4738^2 + 1968^2 .

It is not an unprimeable number, because it can be changed into a prime (26321663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3290205 + ... + 3290212.

Almost surely, 2^26321668 is an apocalyptic number.

It is an amenable number.

26321668 is a deficient number, since it is larger than the sum of its proper divisors (19741258).

26321668 is a wasteful number, since it uses less digits than its factorization.

26321668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580421 (or 6580419 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 26321668 is about 5130.4646963019. The cubic root of 26321668 is about 297.4663210704.

The spelling of 26321668 in words is "twenty-six million, three hundred twenty-one thousand, six hundred sixty-eight".