78621206 has 8 divisors (see below), whose sum is σ = 118109064. Its totient is φ = 39251520.

The previous prime is 78621203. The next prime is 78621281. The reversal of 78621206 is 60212687.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78621203) 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, 27860 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (14763633).

Almost surely, 2^78621206 is an apocalyptic number.

78621206 is a deficient number, since it is larger than the sum of its proper divisors (39487858).

78621206 is a wasteful number, since it uses less digits than its factorization.

78621206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59086.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 78621206 is about 8866.8599853612. The cubic root of 78621206 is about 428.3971442562.

The spelling of 78621206 in words is "seventy-eight million, six hundred twenty-one thousand, two hundred six".