136777770 has 48 divisors (see below), whose sum is σ = 374343840. Its totient is φ = 34553952.

The previous prime is 136777769. The next prime is 136777777. The reversal of 136777770 is 77777631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (136777777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38284 + ... + 41703.

It is an arithmetic number, because the mean of its divisors is an integer number (7798830).

Almost surely, 2^136777770 is an apocalyptic number.

136777770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136777770 is an abundant number, since it is smaller than the sum of its proper divisors (237566070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136777770 is a wasteful number, since it uses less digits than its factorization.

136777770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80019 (or 80016 counting only the distinct ones).

The product of its (nonzero) digits is 302526, while the sum is 45.

The square root of 136777770 is about 11695.2028627126. The cubic root of 136777770 is about 515.2347815666.

The spelling of 136777770 in words is "one hundred thirty-six million, seven hundred seventy-seven thousand, seven hundred seventy".