677474429 has 4 divisors (see below), whose sum is σ = 717325884. Its totient is φ = 637622976.

The previous prime is 677474387. The next prime is 677474443. The reversal of 677474429 is 924474776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 502970329 + 174504100 = 22427^2 + 13210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677474429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677474449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19925702 + ... + 19925735.

It is an arithmetic number, because the mean of its divisors is an integer number (179331471).

Almost surely, 2^677474429 is an apocalyptic number.

It is an amenable number.

677474429 is a deficient number, since it is larger than the sum of its proper divisors (39851455).

677474429 is a wasteful number, since it uses less digits than its factorization.

677474429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39851454.

The product of its digits is 2370816, while the sum is 50.

The square root of 677474429 is about 26028.3389596801. The cubic root of 677474429 is about 878.2759068234.

The spelling of 677474429 in words is "six hundred seventy-seven million, four hundred seventy-four thousand, four hundred twenty-nine".