78962111 has 4 divisors (see below), whose sum is σ = 79002000. Its totient is φ = 78922224.

The previous prime is 78962087. The next prime is 78962137. The reversal of 78962111 is 11126987.

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 78962111 - 2¹⁰ = 78961087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78962711) 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, 16811 + ... + 20988.

It is an arithmetic number, because the mean of its divisors is an integer number (19750500).

Almost surely, 2^78962111 is an apocalyptic number.

78962111 is a deficient number, since it is larger than the sum of its proper divisors (39889).

78962111 is a wasteful number, since it uses less digits than its factorization.

78962111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39888.

The product of its digits is 6048, while the sum is 35.

The square root of 78962111 is about 8886.0627389187. The cubic root of 78962111 is about 429.0154344112.

The spelling of 78962111 in words is "seventy-eight million, nine hundred sixty-two thousand, one hundred eleven".