266897408 has 60 divisors (see below), whose sum is σ = 563312295. Its totient is φ = 126425088.

The previous prime is 266897377. The next prime is 266897419. The reversal of 266897408 is 804798662.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

266897408 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 133448704 = 11552^2 + 11552^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11552.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 14047223 + ... + 14047241.

Almost surely, 2^266897408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266897408

266897408 is an abundant number, since it is smaller than the sum of its proper divisors (296414887).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266897408 is an frugal number, since it uses more digits than its factorization.

266897408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 266897408 is about 16336.9950725340. The cubic root of 266897408 is about 643.8451848067.

Multiplying 266897408 by its sum of digits (50), we get a square (13344870400 = 115520²).

The spelling of 266897408 in words is "two hundred sixty-six million, eight hundred ninety-seven thousand, four hundred eight".