612406993 has 16 divisors (see below), whose sum is σ = 733824000. Its totient is φ = 504496080.

The previous prime is 612406987. The next prime is 612407011. The reversal of 612406993 is 399604216.

It is not a de Polignac number, because 612406993 - 2¹⁷ = 612275921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612406393) 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 15 ways as a sum of consecutive naturals, for example, 58893 + ... + 68506.

It is an arithmetic number, because the mean of its divisors is an integer number (45864000).

Almost surely, 2^612406993 is an apocalyptic number.

It is an amenable number.

612406993 is a deficient number, since it is larger than the sum of its proper divisors (121417007).

612406993 is a wasteful number, since it uses less digits than its factorization.

612406993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127452.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 612406993 is about 24746.8582450379. The cubic root of 612406993 is about 849.2066382797.

The spelling of 612406993 in words is "six hundred twelve million, four hundred six thousand, nine hundred ninety-three".