78136955 has 8 divisors (see below), whose sum is σ = 100977072. Its totient is φ = 57701088.

The previous prime is 78136943. The next prime is 78136963. The reversal of 78136955 is 55963187.

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

It is a cyclic number.

It is not a de Polignac number, because 78136955 - 2¹⁶ = 78071419 is a prime.

It is a super-2 number, since 2×78136955² = 12210767473344050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600989 + ... + 601118.

It is an arithmetic number, because the mean of its divisors is an integer number (12622134).

Almost surely, 2^78136955 is an apocalyptic number.

78136955 is a deficient number, since it is larger than the sum of its proper divisors (22840117).

78136955 is a wasteful number, since it uses less digits than its factorization.

78136955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202125.

The product of its digits is 226800, while the sum is 44.

The square root of 78136955 is about 8839.5110158877. The cubic root of 78136955 is about 427.5157911703.

The spelling of 78136955 in words is "seventy-eight million, one hundred thirty-six thousand, nine hundred fifty-five".