612994434 has 48 divisors (see below), whose sum is σ = 1370444544. Its totient is φ = 182520000.

The previous prime is 612994433. The next prime is 612994439. The reversal of 612994434 is 434499216.

It is a super-2 number, since 2×612994434² = 751524352229960712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612994433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21684 + ... + 41184.

It is an arithmetic number, because the mean of its divisors is an integer number (28550928).

Almost surely, 2^612994434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612994434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685222272).

612994434 is an abundant number, since it is smaller than the sum of its proper divisors (757450110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612994434 is a wasteful number, since it uses less digits than its factorization.

612994434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19563 (or 19550 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 612994434 is about 24758.7244017134. The cubic root of 612994434 is about 849.4780805178.

The spelling of 612994434 in words is "six hundred twelve million, nine hundred ninety-four thousand, four hundred thirty-four".