85401797 has 8 divisors (see below), whose sum is σ = 92045016. Its totient is φ = 78769152.

The previous prime is 85401791. The next prime is 85401803. The reversal of 85401797 is 79710458.

It is an interprime number because it is at equal distance from previous prime (85401791) and next prime (85401803).

It can be written as a sum of positive squares in 4 ways, for example, as 26204161 + 59197636 = 5119^2 + 7694^2 .

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 85401797 - 2⁸ = 85401541 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 (85401791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24593 + ... + 27849.

It is an arithmetic number, because the mean of its divisors is an integer number (11505627).

Almost surely, 2^85401797 is an apocalyptic number.

It is an amenable number.

85401797 is a deficient number, since it is larger than the sum of its proper divisors (6643219).

85401797 is a wasteful number, since it uses less digits than its factorization.

85401797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 85401797 is about 9241.3092687130. The cubic root of 85401797 is about 440.3746756944.

The spelling of 85401797 in words is "eighty-five million, four hundred one thousand, seven hundred ninety-seven".