78854655 has 32 divisors (see below), whose sum is σ = 144887040. Its totient is φ = 36218880.

The previous prime is 78854651. The next prime is 78854689. The reversal of 78854655 is 55645887.

It is not a de Polignac number, because 78854655 - 2² = 78854651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78854651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9442 + ... + 15711.

It is an arithmetic number, because the mean of its divisors is an integer number (4527720).

Almost surely, 2^78854655 is an apocalyptic number.

78854655 is a deficient number, since it is larger than the sum of its proper divisors (66032385).

78854655 is a wasteful number, since it uses less digits than its factorization.

78854655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25191.

The product of its digits is 1344000, while the sum is 48.

The square root of 78854655 is about 8880.0143580965. The cubic root of 78854655 is about 428.8207367699.

The spelling of 78854655 in words is "seventy-eight million, eight hundred fifty-four thousand, six hundred fifty-five".