78432995 has 4 divisors (see below), whose sum is σ = 94119600. Its totient is φ = 62746392.

The previous prime is 78432983. The next prime is 78432997. The reversal of 78432995 is 59923487.

It is a happy number.

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 78432995 - 2⁴ = 78432979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78432997) 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, 7843295 + ... + 7843304.

It is an arithmetic number, because the mean of its divisors is an integer number (23529900).

Almost surely, 2^78432995 is an apocalyptic number.

78432995 is a deficient number, since it is larger than the sum of its proper divisors (15686605).

78432995 is a wasteful number, since it uses less digits than its factorization.

78432995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686604.

The product of its digits is 544320, while the sum is 47.

The square root of 78432995 is about 8856.2404551819. The cubic root of 78432995 is about 428.0550250244.

The spelling of 78432995 in words is "seventy-eight million, four hundred thirty-two thousand, nine hundred ninety-five".