610649243 has 4 divisors (see below), whose sum is σ = 610700328. Its totient is φ = 610598160.

The previous prime is 610649213. The next prime is 610649251. The reversal of 610649243 is 342946016.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 610649243 - 2¹⁴ = 610632859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610649213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080 + ... + 35082.

It is an arithmetic number, because the mean of its divisors is an integer number (152675082).

Almost surely, 2^610649243 is an apocalyptic number.

610649243 is a deficient number, since it is larger than the sum of its proper divisors (51085).

610649243 is a wasteful number, since it uses less digits than its factorization.

610649243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51084.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 610649243 is about 24711.3181153900. The cubic root of 610649243 is about 848.3933864215.

It can be divided in two parts, 61064 and 9243, that added together give a palindrome (70307).

The spelling of 610649243 in words is "six hundred ten million, six hundred forty-nine thousand, two hundred forty-three".