64749753 has 16 divisors (see below), whose sum is σ = 101568960. Its totient is φ = 40627008.

The previous prime is 64749733. The next prime is 64749757. The reversal of 64749753 is 35794746.

It is not a de Polignac number, because 64749753 - 2⁶ = 64749689 is a prime.

It is a super-2 number, since 2×64749753² = 8385061027122018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64749699 and 64749708.

It is not an unprimeable number, because it can be changed into a prime (64749757) 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, 70075 + ... + 70992.

It is an arithmetic number, because the mean of its divisors is an integer number (6348060).

Almost surely, 2^64749753 is an apocalyptic number.

It is an amenable number.

64749753 is a deficient number, since it is larger than the sum of its proper divisors (36819207).

64749753 is a wasteful number, since it uses less digits than its factorization.

64749753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141093 (or 141087 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 64749753 is about 8046.7231218677. The cubic root of 64749753 is about 401.5559253104. Note that the first 3 decimals are identical.

The spelling of 64749753 in words is "sixty-four million, seven hundred forty-nine thousand, seven hundred fifty-three".