643250114 has 16 divisors (see below), whose sum is σ = 1100220408. Its totient is φ = 279420672.

The previous prime is 643250089. The next prime is 643250119. The reversal of 643250114 is 411052346.

It can be written as a sum of positive squares in 4 ways, for example, as 456463225 + 186786889 = 21365^2 + 13667^2 .

It is a super-2 number, since 2×643250114² = 827541418322025992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (643250119) 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, 727217 + ... + 728100.

Almost surely, 2^643250114 is an apocalyptic number.

643250114 is a deficient number, since it is larger than the sum of its proper divisors (456970294).

643250114 is a wasteful number, since it uses less digits than its factorization.

643250114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455349.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 643250114 is about 25362.3759533684. The cubic root of 643250114 is about 863.2301965645.

The spelling of 643250114 in words is "six hundred forty-three million, two hundred fifty thousand, one hundred fourteen".