85627978 has 8 divisors (see below), whose sum is σ = 130201668. Its totient is φ = 42227424.

The previous prime is 85627973. The next prime is 85627979. The reversal of 85627978 is 87972658.

It can be written as a sum of positive squares in 2 ways, for example, as 85322169 + 305809 = 9237^2 + 553^2 .

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 (85627973) 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 3 ways as a sum of consecutive naturals, for example, 293101 + ... + 293392.

Almost surely, 2^85627978 is an apocalyptic number.

85627978 is a deficient number, since it is larger than the sum of its proper divisors (44573690).

85627978 is a wasteful number, since it uses less digits than its factorization.

85627978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586568.

The product of its digits is 1693440, while the sum is 52.

The square root of 85627978 is about 9253.5386744748. The cubic root of 85627978 is about 440.7631007054.

The spelling of 85627978 in words is "eighty-five million, six hundred twenty-seven thousand, nine hundred seventy-eight".