64203490 has 16 divisors (see below), whose sum is σ = 124456248. Its totient is φ = 23705856.

The previous prime is 64203481. The next prime is 64203521. The reversal of 64203490 is 9430246.

It can be written as a sum of positive squares in 4 ways, for example, as 50594769 + 13608721 = 7113^2 + 3689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246807 + ... + 247066.

Almost surely, 2^64203490 is an apocalyptic number.

64203490 is a deficient number, since it is larger than the sum of its proper divisors (60252758).

64203490 is a wasteful number, since it uses less digits than its factorization.

64203490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493893.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 64203490 is about 8012.7080316208. The cubic root of 64203490 is about 400.4234889845.

The spelling of 64203490 in words is "sixty-four million, two hundred three thousand, four hundred ninety".