612778347 has 6 divisors (see below), whose sum is σ = 885124292. Its totient is φ = 408518892.

The previous prime is 612778319. The next prime is 612778363. The reversal of 612778347 is 743877216.

It is not a de Polignac number, because 612778347 - 2¹⁵ = 612745579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612778247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34043233 + ... + 34043250.

Almost surely, 2^612778347 is an apocalyptic number.

612778347 is a deficient number, since it is larger than the sum of its proper divisors (272345945).

612778347 is a wasteful number, since it uses less digits than its factorization.

612778347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68086489 (or 68086486 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 612778347 is about 24754.3601613938. The cubic root of 612778347 is about 849.3782521272.

The spelling of 612778347 in words is "six hundred twelve million, seven hundred seventy-eight thousand, three hundred forty-seven".