26947664 has 10 divisors (see below), whose sum is σ = 52211130. Its totient is φ = 13473824.

The previous prime is 26947663. The next prime is 26947717. The reversal of 26947664 is 46674962.

It can be written as a sum of positive squares in only one way, i.e., 18421264 + 8526400 = 4292^2 + 2920^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26947663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842099 + ... + 842130.

It is an arithmetic number, because the mean of its divisors is an integer number (5221113).

Almost surely, 2^26947664 is an apocalyptic number.

It is an amenable number.

26947664 is a deficient number, since it is larger than the sum of its proper divisors (25263466).

26947664 is a wasteful number, since it uses less digits than its factorization.

26947664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684237 (or 1684231 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 26947664 is about 5191.1139459657. The cubic root of 26947664 is about 299.8060375853.

The spelling of 26947664 in words is "twenty-six million, nine hundred forty-seven thousand, six hundred sixty-four".