64299534 has 64 divisors (see below), whose sum is σ = 149318400. Its totient is φ = 18289152.

The previous prime is 64299533. The next prime is 64299539. The reversal of 64299534 is 43599246.

It is a super-4 number, since 4×64299534⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64299533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63222 + ... + 64230.

It is an arithmetic number, because the mean of its divisors is an integer number (2333100).

Almost surely, 2^64299534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64299534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74659200).

64299534 is an abundant number, since it is smaller than the sum of its proper divisors (85018866).

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

64299534 is a wasteful number, since it uses less digits than its factorization.

64299534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its digits is 233280, while the sum is 42.

The square root of 64299534 is about 8018.6990216618. The cubic root of 64299534 is about 400.6230581591.

The spelling of 64299534 in words is "sixty-four million, two hundred ninety-nine thousand, five hundred thirty-four".