64623407 has 2 divisors, whose sum is σ = 64623408. Its totient is φ = 64623406.

The previous prime is 64623401. The next prime is 64623413. The reversal of 64623407 is 70432646.

It is a balanced prime because it is at equal distance from previous prime (64623401) and next prime (64623413).

It is a cyclic number.

It is not a de Polignac number, because 64623407 - 2¹⁸ = 64361263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64623401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32311703 + 32311704.

It is an arithmetic number, because the mean of its divisors is an integer number (32311704).

Almost surely, 2^64623407 is an apocalyptic number.

64623407 is a deficient number, since it is larger than the sum of its proper divisors (1).

64623407 is an equidigital number, since it uses as much as digits as its factorization.

64623407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 64623407 is about 8038.8685149093. The cubic root of 64623407 is about 401.2945702828.

The spelling of 64623407 in words is "sixty-four million, six hundred twenty-three thousand, four hundred seven".