85918770 has 48 divisors (see below), whose sum is σ = 255303360. Its totient is φ = 19638432.

The previous prime is 85918769. The next prime is 85918771. The reversal of 85918770 is 7781958.

It is an interprime number because it is at equal distance from previous prime (85918769) and next prime (85918771).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85918771) 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 23 ways as a sum of consecutive naturals, for example, 67560 + ... + 68819.

It is an arithmetic number, because the mean of its divisors is an integer number (5318820).

Almost surely, 2^85918770 is an apocalyptic number.

85918770 is an abundant number, since it is smaller than the sum of its proper divisors (169384590).

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

85918770 is a wasteful number, since it uses less digits than its factorization.

85918770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136399 (or 136396 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 85918770 is about 9269.2378327455. The cubic root of 85918770 is about 441.2614797442.

The spelling of 85918770 in words is "eighty-five million, nine hundred eighteen thousand, seven hundred seventy".