65247072 has 144 divisors (see below), whose sum is σ = 194258736. Its totient is φ = 19148800.

The previous prime is 65247059. The next prime is 65247163. The reversal of 65247072 is 27074256.

It is a super-3 number, since 3×65247072³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476188 + ... + 476324.

It is an arithmetic number, because the mean of its divisors is an integer number (1349019).

Almost surely, 2^65247072 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 65247072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97129368).

65247072 is an abundant number, since it is smaller than the sum of its proper divisors (129011664).

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

65247072 is a wasteful number, since it uses less digits than its factorization.

65247072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 65247072 is about 8077.5659700184. The cubic root of 65247072 is about 402.5813721263.

The spelling of 65247072 in words is "sixty-five million, two hundred forty-seven thousand, seventy-two".