85070978 has 8 divisors (see below), whose sum is σ = 132006780. Its totient is φ = 41068720.

The previous prime is 85070977. The next prime is 85071001. The reversal of 85070978 is 87907058.

It can be written as a sum of positive squares in 2 ways, for example, as 84695209 + 375769 = 9203^2 + 613^2 .

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

It is not an unprimeable number, because it can be changed into a prime (85070971) 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, 733313 + ... + 733428.

Almost surely, 2^85070978 is an apocalyptic number.

85070978 is a deficient number, since it is larger than the sum of its proper divisors (46935802).

85070978 is a wasteful number, since it uses less digits than its factorization.

85070978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466772.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 85070978 is about 9223.3929765569. The cubic root of 85070978 is about 439.8053167654.

The spelling of 85070978 in words is "eighty-five million, seventy thousand, nine hundred seventy-eight".