64250769 has 24 divisors (see below), whose sum is σ = 99291168. Its totient is φ = 36643840.

The previous prime is 64250743. The next prime is 64250773. The reversal of 64250769 is 96705246.

64250769 = T₁₅₂ + T₁₅₃ + ... + T₇₂₉.

64250769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64250769 - 2⁸ = 64250513 is a prime.

It is a super-2 number, since 2×64250769² = 8256322634182722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64250869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6169 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (4137132).

Almost surely, 2^64250769 is an apocalyptic number.

It is an amenable number.

64250769 is a deficient number, since it is larger than the sum of its proper divisors (35040399).

64250769 is a wasteful number, since it uses less digits than its factorization.

64250769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785 (or 6768 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 64250769 is about 8015.6577396992. The cubic root of 64250769 is about 400.5217545512.

The spelling of 64250769 in words is "sixty-four million, two hundred fifty thousand, seven hundred sixty-nine".