78249606 has 16 divisors (see below), whose sum is σ = 165705264. Its totient is φ = 24548864.

The previous prime is 78249593. The next prime is 78249629. The reversal of 78249606 is 60694287.

It is a super-2 number, since 2×78249606² = 12246001678310472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383475 + ... + 383678.

It is an arithmetic number, because the mean of its divisors is an integer number (10356579).

Almost surely, 2^78249606 is an apocalyptic number.

78249606 is an abundant number, since it is smaller than the sum of its proper divisors (87455658).

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

78249606 is a wasteful number, since it uses less digits than its factorization.

78249606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767175.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 78249606 is about 8845.8807362523. The cubic root of 78249606 is about 427.7211440902.

The spelling of 78249606 in words is "seventy-eight million, two hundred forty-nine thousand, six hundred six".