64196769 has 32 divisors (see below), whose sum is σ = 106331904. Its totient is φ = 33546240.

The previous prime is 64196767. The next prime is 64196771. The reversal of 64196769 is 96769146.

It is an interprime number because it is at equal distance from previous prime (64196767) and next prime (64196771).

It is not a de Polignac number, because 64196769 - 2¹ = 64196767 is a prime.

It is a super-2 number, since 2×64196769² = 8242450300078722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64196761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29809 + ... + 31889.

It is an arithmetic number, because the mean of its divisors is an integer number (3322872).

Almost surely, 2^64196769 is an apocalyptic number.

It is an amenable number.

64196769 is a deficient number, since it is larger than the sum of its proper divisors (42135135).

64196769 is a wasteful number, since it uses less digits than its factorization.

64196769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217.

The product of its digits is 489888, while the sum is 48.

The square root of 64196769 is about 8012.2886243570. The cubic root of 64196769 is about 400.4095160152.

The spelling of 64196769 in words is "sixty-four million, one hundred ninety-six thousand, seven hundred sixty-nine".