64761842 has 16 divisors (see below), whose sum is σ = 102837600. Its totient is φ = 30502080.

The previous prime is 64761841. The next prime is 64761847. The reversal of 64761842 is 24816746.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 64761796 and 64761805.

It is not an unprimeable number, because it can be changed into a prime (64761841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 11562.

It is an arithmetic number, because the mean of its divisors is an integer number (6427350).

Almost surely, 2^64761842 is an apocalyptic number.

64761842 is a deficient number, since it is larger than the sum of its proper divisors (38075758).

64761842 is a wasteful number, since it uses less digits than its factorization.

64761842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9721.

The product of its digits is 64512, while the sum is 38.

The square root of 64761842 is about 8047.4742621521. The cubic root of 64761842 is about 401.5809143761.

The spelling of 64761842 in words is "sixty-four million, seven hundred sixty-one thousand, eight hundred forty-two".