677445121 has 8 divisors (see below), whose sum is σ = 717642720. Its totient is φ = 637286208.

The previous prime is 677445101. The next prime is 677445143. The reversal of 677445121 is 121544776.

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

It is not a de Polignac number, because 677445121 - 2²⁷ = 543227393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677445101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31410 + ... + 48388.

It is an arithmetic number, because the mean of its divisors is an integer number (89705340).

Almost surely, 2^677445121 is an apocalyptic number.

It is an amenable number.

677445121 is a deficient number, since it is larger than the sum of its proper divisors (40197599).

677445121 is a wasteful number, since it uses less digits than its factorization.

677445121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343.

The product of its digits is 47040, while the sum is 37.

The square root of 677445121 is about 26027.7759518557. The cubic root of 677445121 is about 878.2632417050.

Adding to 677445121 its reverse (121544776), we get a palindrome (798989897).

The spelling of 677445121 in words is "six hundred seventy-seven million, four hundred forty-five thousand, one hundred twenty-one".