65494064 has 120 divisors (see below), whose sum is σ = 153070560. Its totient is φ = 26966016.

The previous prime is 65494063. The next prime is 65494069. The reversal of 65494064 is 46049456.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (65494063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2258402 + ... + 2258430.

It is an arithmetic number, because the mean of its divisors is an integer number (1275588).

Almost surely, 2^65494064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65494064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76535280).

65494064 is an abundant number, since it is smaller than the sum of its proper divisors (87576496).

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

65494064 is a wasteful number, since it uses less digits than its factorization.

65494064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 65494064 is about 8092.8402925055. The cubic root of 65494064 is about 403.0887214433.

The spelling of 65494064 in words is "sixty-five million, four hundred ninety-four thousand, sixty-four".