64861460 has 24 divisors (see below), whose sum is σ = 144222120. Its totient is φ = 24418304.

The previous prime is 64861441. The next prime is 64861519. The reversal of 64861460 is 6416846.

It can be written as a sum of positive squares in 4 ways, for example, as 16224784 + 48636676 = 4028^2 + 6974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64861460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95045 + ... + 95724.

It is an arithmetic number, because the mean of its divisors is an integer number (6009255).

Almost surely, 2^64861460 is an apocalyptic number.

It is an amenable number.

64861460 is an abundant number, since it is smaller than the sum of its proper divisors (79360660).

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

64861460 is a wasteful number, since it uses less digits than its factorization.

64861460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190795 (or 190793 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 64861460 is about 8053.6612791947. The cubic root of 64861460 is about 401.7867155691.

The spelling of 64861460 in words is "sixty-four million, eight hundred sixty-one thousand, four hundred sixty".