612904731 has 8 divisors (see below), whose sum is σ = 828716544. Its totient is φ = 402848040.

The previous prime is 612904729. The next prime is 612904781. The reversal of 612904731 is 137409216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612904731 - 2¹ = 612904729 is a prime.

It is a super-2 number, since 2×612904731² = 751304418564364722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612904692 and 612904701.

It is not an unprimeable number, because it can be changed into a prime (612904781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1438531 + ... + 1438956.

It is an arithmetic number, because the mean of its divisors is an integer number (103589568).

Almost surely, 2^612904731 is an apocalyptic number.

612904731 is a deficient number, since it is larger than the sum of its proper divisors (215811813).

612904731 is a wasteful number, since it uses less digits than its factorization.

612904731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877561.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 612904731 is about 24756.9127921880. The cubic root of 612904731 is about 849.4366421592.

The spelling of 612904731 in words is "six hundred twelve million, nine hundred four thousand, seven hundred thirty-one".