678235385475 has 36 divisors (see below), whose sum is σ = 1244424096552. Its totient is φ = 352902960000.

The previous prime is 678235385461. The next prime is 678235385489. The reversal of 678235385475 is 574583532876.

678235385475 is a `hidden beast` number, since 6 + 7 + 8 + 23 + 538 + 5 + 4 + 75 = 666.

It is an interprime number because it is at equal distance from previous prime (678235385461) and next prime (678235385489).

It is not a de Polignac number, because 678235385475 - 2⁴ = 678235385459 is a prime.

It is a super-2 number, since 2×678235385475² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36751501 + ... + 36769950.

Almost surely, 2^678235385475 is an apocalyptic number.

678235385475 is a deficient number, since it is larger than the sum of its proper divisors (566188711077).

678235385475 is a wasteful number, since it uses less digits than its factorization.

678235385475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73521508 (or 73521500 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 63.

The spelling of 678235385475 in words is "six hundred seventy-eight billion, two hundred thirty-five million, three hundred eighty-five thousand, four hundred seventy-five".