612263858 has 4 divisors (see below), whose sum is σ = 918395790. Its totient is φ = 306131928.

The previous prime is 612263851. The next prime is 612263879. The reversal of 612263858 is 858362216.

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

It can be written as a sum of positive squares in only one way, i.e., 384042409 + 228221449 = 19597^2 + 15107^2 .

It is not an unprimeable number, because it can be changed into a prime (612263851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153065963 + ... + 153065966.

Almost surely, 2^612263858 is an apocalyptic number.

612263858 is a deficient number, since it is larger than the sum of its proper divisors (306131932).

612263858 is a wasteful number, since it uses less digits than its factorization.

612263858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306131931.

The product of its digits is 138240, while the sum is 41.

The square root of 612263858 is about 24743.9660927669. The cubic root of 612263858 is about 849.1404727696.

The spelling of 612263858 in words is "six hundred twelve million, two hundred sixty-three thousand, eight hundred fifty-eight".