78673630 has 16 divisors (see below), whose sum is σ = 161843040. Its totient is φ = 26973792.

The previous prime is 78673627. The next prime is 78673643. The reversal of 78673630 is 3637687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561885 + ... + 562024.

It is an arithmetic number, because the mean of its divisors is an integer number (10115190).

Almost surely, 2^78673630 is an apocalyptic number.

78673630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78673630 is an abundant number, since it is smaller than the sum of its proper divisors (83169410).

78673630 is a wasteful number, since it uses less digits than its factorization.

78673630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123923.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 78673630 is about 8869.8156688851. The cubic root of 78673630 is about 428.4923403796.

The spelling of 78673630 in words is "seventy-eight million, six hundred seventy-three thousand, six hundred thirty".