234400645 has 4 divisors (see below), whose sum is σ = 281280780. Its totient is φ = 187520512.

The previous prime is 234400633. The next prime is 234400651. The reversal of 234400645 is 546004432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74200996 + 160199649 = 8614^2 + 12657^2 .

It is a cyclic number.

It is not a de Polignac number, because 234400645 - 2¹³ = 234392453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23440060 + ... + 23440069.

It is an arithmetic number, because the mean of its divisors is an integer number (70320195).

Almost surely, 2^234400645 is an apocalyptic number.

It is an amenable number.

234400645 is a deficient number, since it is larger than the sum of its proper divisors (46880135).

234400645 is an equidigital number, since it uses as much as digits as its factorization.

234400645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46880134.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 234400645 is about 15310.1484316776. The cubic root of 234400645 is about 616.5755052322.

The spelling of 234400645 in words is "two hundred thirty-four million, four hundred thousand, six hundred forty-five".