64750642 has 16 divisors (see below), whose sum is σ = 106222464. Its totient is φ = 29358000.

The previous prime is 64750639. The next prime is 64750657. The reversal of 64750642 is 24605746.

It is a junction number, because it is equal to n+sod(n) for n = 64750598 and 64750607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5767 + ... + 12757.

It is an arithmetic number, because the mean of its divisors is an integer number (6638904).

Almost surely, 2^64750642 is an apocalyptic number.

64750642 is a deficient number, since it is larger than the sum of its proper divisors (41471822).

64750642 is a wasteful number, since it uses less digits than its factorization.

64750642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 64750642 is about 8046.7783615556. The cubic root of 64750642 is about 401.5577630604.

Subtracting from 64750642 its reverse (24605746), we obtain a square (40144896 = 6336²).

The spelling of 64750642 in words is "sixty-four million, seven hundred fifty thousand, six hundred forty-two".