64610633 has 4 divisors (see below), whose sum is σ = 65276820. Its totient is φ = 63944448.

The previous prime is 64610627. The next prime is 64610653. The reversal of 64610633 is 33601646.

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 46403344 + 18207289 = 6812^2 + 4267^2 .

It is a cyclic number.

It is not a de Polignac number, because 64610633 - 2⁴ = 64610617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64610596 and 64610605.

It is not an unprimeable number, because it can be changed into a prime (64610653) 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, 332948 + ... + 333141.

It is an arithmetic number, because the mean of its divisors is an integer number (16319205).

Almost surely, 2^64610633 is an apocalyptic number.

It is an amenable number.

64610633 is a deficient number, since it is larger than the sum of its proper divisors (666187).

64610633 is an equidigital number, since it uses as much as digits as its factorization.

64610633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666186.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 64610633 is about 8038.0739608441. The cubic root of 64610633 is about 401.2681274665.

The spelling of 64610633 in words is "sixty-four million, six hundred ten thousand, six hundred thirty-three".