64761020 has 12 divisors (see below), whose sum is σ = 135998184. Its totient is φ = 25904400.

The previous prime is 64761019. The next prime is 64761043. The reversal of 64761020 is 2016746.

It is a super-2 number, since 2×64761020² = 8387979422880800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619006 + ... + 1619045.

It is an arithmetic number, because the mean of its divisors is an integer number (11333182).

Almost surely, 2^64761020 is an apocalyptic number.

It is an amenable number.

64761020 is an abundant number, since it is smaller than the sum of its proper divisors (71237164).

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

64761020 is a wasteful number, since it uses less digits than its factorization.

64761020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238060 (or 3238058 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 64761020 is about 8047.4231900653. The cubic root of 64761020 is about 401.5792153256.

Adding to 64761020 its reverse (2016746), we get a palindrome (66777766).

The spelling of 64761020 in words is "sixty-four million, seven hundred sixty-one thousand, twenty".