78649495 has 8 divisors (see below), whose sum is σ = 95245920. Its totient is φ = 62341920.

The previous prime is 78649481. The next prime is 78649507. The reversal of 78649495 is 59494687.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78649495 - 2⁷ = 78649367 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71611 + ... + 72700.

It is an arithmetic number, because the mean of its divisors is an integer number (11905740).

Almost surely, 2^78649495 is an apocalyptic number.

78649495 is a deficient number, since it is larger than the sum of its proper divisors (16596425).

78649495 is a wasteful number, since it uses less digits than its factorization.

78649495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144425.

The product of its digits is 2177280, while the sum is 52.

The square root of 78649495 is about 8868.4550514732. The cubic root of 78649495 is about 428.4485191723.

The spelling of 78649495 in words is "seventy-eight million, six hundred forty-nine thousand, four hundred ninety-five".