64620426 has 32 divisors (see below), whose sum is σ = 142950528. Its totient is φ = 19344960.

The previous prime is 64620421. The next prime is 64620427. The reversal of 64620426 is 62402646.

64620426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64620393 and 64620402.

It is not an unprimeable number, because it can be changed into a prime (64620421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8310 + ... + 14081.

It is an arithmetic number, because the mean of its divisors is an integer number (4467204).

Almost surely, 2^64620426 is an apocalyptic number.

64620426 is an abundant number, since it is smaller than the sum of its proper divisors (78330102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64620426 is a wasteful number, since it uses less digits than its factorization.

64620426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22446.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 64620426 is about 8038.6831011056. The cubic root of 64620426 is about 401.2883997761.

The spelling of 64620426 in words is "sixty-four million, six hundred twenty thousand, four hundred twenty-six".