675121778 has 8 divisors (see below), whose sum is σ = 1029846960. Its totient is φ = 331839460.

The previous prime is 675121763. The next prime is 675121787. The reversal of 675121778 is 877121576.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2860568 + ... + 2860803.

It is an arithmetic number, because the mean of its divisors is an integer number (128730870).

Almost surely, 2^675121778 is an apocalyptic number.

675121778 is a deficient number, since it is larger than the sum of its proper divisors (354725182).

675121778 is a wasteful number, since it uses less digits than its factorization.

675121778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721432.

The product of its digits is 164640, while the sum is 44.

The square root of 675121778 is about 25983.1056265413. The cubic root of 675121778 is about 877.2580710373.

The spelling of 675121778 in words is "six hundred seventy-five million, one hundred twenty-one thousand, seven hundred seventy-eight".