136778001 has 8 divisors (see below), whose sum is σ = 185811840. Its totient is φ = 89464752.

The previous prime is 136777999. The next prime is 136778029. The reversal of 136778001 is 100877631.

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

It is not a de Polignac number, because 136778001 - 2¹ = 136777999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136778101) 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, 429961 + ... + 430278.

It is an arithmetic number, because the mean of its divisors is an integer number (23226480).

Almost surely, 2^136778001 is an apocalyptic number.

It is an amenable number.

136778001 is a deficient number, since it is larger than the sum of its proper divisors (49033839).

136778001 is an equidigital number, since it uses as much as digits as its factorization.

136778001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860295.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 136778001 is about 11695.2127385525. The cubic root of 136778001 is about 515.2350716214.

The spelling of 136778001 in words is "one hundred thirty-six million, seven hundred seventy-eight thousand, one".