64529460 has 120 divisors (see below), whose sum is σ = 206064936. Its totient is φ = 16899840.

The previous prime is 64529447. The next prime is 64529473. The reversal of 64529460 is 6492546.

64529460 is a `hidden beast` number, since 645 + 2 + 9 + 4 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64529447) and next prime (64529473).

It can be written as a sum of positive squares in 4 ways, for example, as 944784 + 63584676 = 972^2 + 7974^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 98494 + ... + 99146.

Almost surely, 2^64529460 is an apocalyptic number.

64529460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64529460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103032468).

64529460 is an abundant number, since it is smaller than the sum of its proper divisors (141535476).

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

64529460 is a wasteful number, since it uses less digits than its factorization.

64529460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 64529460 is about 8033.0230922113. The cubic root of 64529460 is about 401.1000138176.

The spelling of 64529460 in words is "sixty-four million, five hundred twenty-nine thousand, four hundred sixty".