78235655 has 8 divisors (see below), whose sum is σ = 93943584. Its totient is φ = 62548000.

The previous prime is 78235643. The next prime is 78235657. The reversal of 78235655 is 55653287.

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

It is not a de Polignac number, because 78235655 - 2⁴ = 78235639 is a prime.

It is a super-2 number, since 2×78235655² = 12241635426558050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78235657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5390 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (11742948).

Almost surely, 2^78235655 is an apocalyptic number.

78235655 is a deficient number, since it is larger than the sum of its proper divisors (15707929).

78235655 is a wasteful number, since it uses less digits than its factorization.

78235655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137.

The product of its digits is 252000, while the sum is 41.

The square root of 78235655 is about 8845.0921419734. The cubic root of 78235655 is about 427.6957233345.

The spelling of 78235655 in words is "seventy-eight million, two hundred thirty-five thousand, six hundred fifty-five".