65406744 has 64 divisors (see below), whose sum is σ = 195669600. Its totient is φ = 20124288.

The previous prime is 65406743. The next prime is 65406749. The reversal of 65406744 is 44760456.

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

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 65406699 and 65406708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65406743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8839 + ... + 14454.

Almost surely, 2^65406744 is an apocalyptic number.

It is an amenable number.

65406744 is an abundant number, since it is smaller than the sum of its proper divisors (130262856).

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

65406744 is a wasteful number, since it uses less digits than its factorization.

65406744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23321 (or 23311 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 65406744 is about 8087.4436010398. The cubic root of 65406744 is about 402.9095023454.

The spelling of 65406744 in words is "sixty-five million, four hundred six thousand, seven hundred forty-four".