78098670 has 48 divisors (see below), whose sum is σ = 218679552. Its totient is φ = 19224000.

The previous prime is 78098659. The next prime is 78098717. The reversal of 78098670 is 7689087.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32206 + ... + 34545.

It is an arithmetic number, because the mean of its divisors is an integer number (4555824).

Almost surely, 2^78098670 is an apocalyptic number.

78098670 is an abundant number, since it is smaller than the sum of its proper divisors (140580882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78098670 is a wasteful number, since it uses less digits than its factorization.

78098670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66777 (or 66774 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 78098670 is about 8837.3451895917. The cubic root of 78098670 is about 427.4459560285.

The spelling of 78098670 in words is "seventy-eight million, ninety-eight thousand, six hundred seventy".