78987035 has 4 divisors (see below), whose sum is σ = 94784448. Its totient is φ = 63189624.

The previous prime is 78987031. The next prime is 78987061. The reversal of 78987035 is 53078987.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78987035 - 2² = 78987031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78987031) 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, 7898699 + ... + 7898708.

It is an arithmetic number, because the mean of its divisors is an integer number (23696112).

Almost surely, 2^78987035 is an apocalyptic number.

78987035 is a deficient number, since it is larger than the sum of its proper divisors (15797413).

78987035 is a wasteful number, since it uses less digits than its factorization.

78987035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15797412.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 78987035 is about 8887.4650491577. The cubic root of 78987035 is about 429.0605685298.

The spelling of 78987035 in words is "seventy-eight million, nine hundred eighty-seven thousand, thirty-five".