136670722 has 4 divisors (see below), whose sum is σ = 205006086. Its totient is φ = 68335360.

The previous prime is 136670719. The next prime is 136670731. The reversal of 136670722 is 227076631.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 125641681 + 11029041 = 11209^2 + 3321^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34167679 + ... + 34167682.

Almost surely, 2^136670722 is an apocalyptic number.

136670722 is a deficient number, since it is larger than the sum of its proper divisors (68335364).

136670722 is an equidigital number, since it uses as much as digits as its factorization.

136670722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68335363.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 136670722 is about 11690.6253896017. The cubic root of 136670722 is about 515.1003317263.

The spelling of 136670722 in words is "one hundred thirty-six million, six hundred seventy thousand, seven hundred twenty-two".