78889701 has 32 divisors (see below), whose sum is σ = 120867840. Its totient is φ = 45679920.

The previous prime is 78889687. The next prime is 78889703. The reversal of 78889701 is 10798887.

It is not a de Polignac number, because 78889701 - 2⁹ = 78889189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78889703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91410 + ... + 92268.

It is an arithmetic number, because the mean of its divisors is an integer number (3777120).

Almost surely, 2^78889701 is an apocalyptic number.

It is an amenable number.

78889701 is a deficient number, since it is larger than the sum of its proper divisors (41978139).

78889701 is a wasteful number, since it uses less digits than its factorization.

78889701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 78889701 is about 8881.9874465122. The cubic root of 78889701 is about 428.8842554283.

The spelling of 78889701 in words is "seventy-eight million, eight hundred eighty-nine thousand, seven hundred one".