75866478 has 32 divisors (see below), whose sum is σ = 161844480. Its totient is φ = 23625600.

The previous prime is 75866471. The next prime is 75866501. The reversal of 75866478 is 87466857.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 75866478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75866471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11503 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (5057640).

Almost surely, 2^75866478 is an apocalyptic number.

75866478 is an abundant number, since it is smaller than the sum of its proper divisors (85978002).

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

75866478 is a wasteful number, since it uses less digits than its factorization.

75866478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512.

The product of its digits is 2257920, while the sum is 51.

The square root of 75866478 is about 8710.1365086892. The cubic root of 75866478 is about 423.3341535245.

The spelling of 75866478 in words is "seventy-five million, eight hundred sixty-six thousand, four hundred seventy-eight".