158777066 has 16 divisors (see below), whose sum is σ = 273324480. Its totient is φ = 67763520.

The previous prime is 158777063. The next prime is 158777077. The reversal of 158777066 is 660777851.

It is a self number, because there is not a number n which added to its sum of digits gives 158777066.

It is not an unprimeable number, because it can be changed into a prime (158777063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20156 + ... + 26903.

It is an arithmetic number, because the mean of its divisors is an integer number (17082780).

Almost surely, 2^158777066 is an apocalyptic number.

158777066 is a deficient number, since it is larger than the sum of its proper divisors (114547414).

158777066 is a wasteful number, since it uses less digits than its factorization.

158777066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47309.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 158777066 is about 12600.6772040236. The cubic root of 158777066 is about 541.4968369939.

The spelling of 158777066 in words is "one hundred fifty-eight million, seven hundred seventy-seven thousand, sixty-six".