622749859 has 4 divisors (see below), whose sum is σ = 635999904. Its totient is φ = 609499816.

The previous prime is 622749851. The next prime is 622749887. The reversal of 622749859 is 958947226.

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

It is a cyclic number.

It is not a de Polignac number, because 622749859 - 2³ = 622749851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622749851) 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, 6624952 + ... + 6625045.

It is an arithmetic number, because the mean of its divisors is an integer number (158999976).

Almost surely, 2^622749859 is an apocalyptic number.

622749859 is a deficient number, since it is larger than the sum of its proper divisors (13250045).

622749859 is a wasteful number, since it uses less digits than its factorization.

622749859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13250044.

The product of its digits is 2177280, while the sum is 52.

The square root of 622749859 is about 24954.9566018457. The cubic root of 622749859 is about 853.9606896695.

The spelling of 622749859 in words is "six hundred twenty-two million, seven hundred forty-nine thousand, eight hundred fifty-nine".