85961380 has 12 divisors (see below), whose sum is σ = 180518940. Its totient is φ = 34384544.

The previous prime is 85961363. The next prime is 85961387. The reversal of 85961380 is 8316958.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61121124 + 24840256 = 7818^2 + 4984^2 .

It is not an unprimeable number, because it can be changed into a prime (85961387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2149015 + ... + 2149054.

It is an arithmetic number, because the mean of its divisors is an integer number (15043245).

Almost surely, 2^85961380 is an apocalyptic number.

It is an amenable number.

85961380 is an abundant number, since it is smaller than the sum of its proper divisors (94557560).

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

85961380 is a wasteful number, since it uses less digits than its factorization.

85961380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298078 (or 4298076 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 85961380 is about 9271.5360108237. The cubic root of 85961380 is about 441.3344131452.

The spelling of 85961380 in words is "eighty-five million, nine hundred sixty-one thousand, three hundred eighty".