526340661 has 48 divisors (see below), whose sum is σ = 904472064. Its totient is φ = 264492000.

The previous prime is 526340653. The next prime is 526340681. The reversal of 526340661 is 166043625.

It is not a de Polignac number, because 526340661 - 2³ = 526340653 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526340611) 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, 220806 + ... + 223176.

It is an arithmetic number, because the mean of its divisors is an integer number (18843168).

Almost surely, 2^526340661 is an apocalyptic number.

It is an amenable number.

526340661 is a deficient number, since it is larger than the sum of its proper divisors (378131403).

526340661 is a wasteful number, since it uses less digits than its factorization.

526340661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454 (or 2423 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 526340661 is about 22942.1154430013. The cubic root of 526340661 is about 807.4004253118.

The spelling of 526340661 in words is "five hundred twenty-six million, three hundred forty thousand, six hundred sixty-one".