65436749 has 8 divisors (see below), whose sum is σ = 75199488. Its totient is φ = 55777680.

The previous prime is 65436739. The next prime is 65436773. The reversal of 65436749 is 94763456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65436749 - 2¹⁶ = 65371213 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65436739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24557 + ... + 27090.

It is an arithmetic number, because the mean of its divisors is an integer number (9399936).

Almost surely, 2^65436749 is an apocalyptic number.

It is an amenable number.

65436749 is a deficient number, since it is larger than the sum of its proper divisors (9762739).

65436749 is a wasteful number, since it uses less digits than its factorization.

65436749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51835.

The product of its digits is 544320, while the sum is 44.

The square root of 65436749 is about 8089.2984244618. The cubic root of 65436749 is about 402.9711037987.

The spelling of 65436749 in words is "sixty-five million, four hundred thirty-six thousand, seven hundred forty-nine".