78207623 has 12 divisors (see below), whose sum is σ = 86759568. Its totient is φ = 70424640.

The previous prime is 78207611. The next prime is 78207641. The reversal of 78207623 is 32670287.

It is not a de Polignac number, because 78207623 - 2¹² = 78203527 is a prime.

It is a super-2 number, since 2×78207623² = 12232864590620258, 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 (78207643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1286 + ... + 12572.

It is an arithmetic number, because the mean of its divisors is an integer number (7229964).

Almost surely, 2^78207623 is an apocalyptic number.

78207623 is a deficient number, since it is larger than the sum of its proper divisors (8551945).

78207623 is a wasteful number, since it uses less digits than its factorization.

78207623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354 (or 11341 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 78207623 is about 8843.5073924320. The cubic root of 78207623 is about 427.6446358062.

The spelling of 78207623 in words is "seventy-eight million, two hundred seven thousand, six hundred twenty-three".