78058766 has 4 divisors (see below), whose sum is σ = 117088152. Its totient is φ = 39029382.

The previous prime is 78058763. The next prime is 78058787. The reversal of 78058766 is 66785087.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78058766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78058763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19514690 + ... + 19514693.

It is an arithmetic number, because the mean of its divisors is an integer number (29272038).

Almost surely, 2^78058766 is an apocalyptic number.

78058766 is a deficient number, since it is larger than the sum of its proper divisors (39029386).

78058766 is a wasteful number, since it uses less digits than its factorization.

78058766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39029385.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 78058766 is about 8835.0872095300. The cubic root of 78058766 is about 427.3731433960.

The spelling of 78058766 in words is "seventy-eight million, fifty-eight thousand, seven hundred sixty-six".