85266757 has 8 divisors (see below), whose sum is σ = 90359640. Its totient is φ = 80317440.

The previous prime is 85266743. The next prime is 85266761. The reversal of 85266757 is 75766258.

It is a Cunningham number, because it is equal to 9234²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 85266756 = 1^2 + 9234^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 85266757 - 2¹⁵ = 85233989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85266157) 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, 34668 + ... + 37045.

It is an arithmetic number, because the mean of its divisors is an integer number (11294955).

Almost surely, 2^85266757 is an apocalyptic number.

It is an amenable number.

85266757 is a deficient number, since it is larger than the sum of its proper divisors (5092883).

85266757 is a wasteful number, since it uses less digits than its factorization.

85266757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71783.

The product of its digits is 705600, while the sum is 46.

The square root of 85266757 is about 9234.0000541477. Note that the first 4 decimals coincide. The cubic root of 85266757 is about 440.1424418298.

The spelling of 85266757 in words is "eighty-five million, two hundred sixty-six thousand, seven hundred fifty-seven".