612642831 has 8 divisors (see below), whose sum is σ = 817625520. Its totient is φ = 408044352.

The previous prime is 612642829. The next prime is 612642851. The reversal of 612642831 is 138246216.

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

It is not a de Polignac number, because 612642831 - 2¹ = 612642829 is a prime.

It is a super-2 number, since 2×612642831² = 750662476751389122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612642792 and 612642801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612642851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92310 + ... + 98723.

It is an arithmetic number, because the mean of its divisors is an integer number (102203190).

Almost surely, 2^612642831 is an apocalyptic number.

612642831 is a deficient number, since it is larger than the sum of its proper divisors (204982689).

612642831 is a wasteful number, since it uses less digits than its factorization.

612642831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192105.

The product of its digits is 13824, while the sum is 33.

The square root of 612642831 is about 24751.6227952835. The cubic root of 612642831 is about 849.3156341459.

The spelling of 612642831 in words is "six hundred twelve million, six hundred forty-two thousand, eight hundred thirty-one".