617228429 has 4 divisors (see below), whose sum is σ = 621733884. Its totient is φ = 612722976.

The previous prime is 617228411. The next prime is 617228461. The reversal of 617228429 is 924822716.

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 413024329 + 204204100 = 20323^2 + 14290^2 .

It is a cyclic number.

It is not a de Polignac number, because 617228429 - 2⁸ = 617228173 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 (617228329) 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, 2252522 + ... + 2252795.

It is an arithmetic number, because the mean of its divisors is an integer number (155433471).

Almost surely, 2^617228429 is an apocalyptic number.

It is an amenable number.

617228429 is a deficient number, since it is larger than the sum of its proper divisors (4505455).

617228429 is a wasteful number, since it uses less digits than its factorization.

617228429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505454.

The product of its digits is 96768, while the sum is 41.

The square root of 617228429 is about 24844.0823738773. The cubic root of 617228429 is about 851.4293960729.

The spelling of 617228429 in words is "six hundred seventeen million, two hundred twenty-eight thousand, four hundred twenty-nine".