64349397 has 60 divisors (see below), whose sum is σ = 115648896. Its totient is φ = 35516880.

The previous prime is 64349393. The next prime is 64349431. The reversal of 64349397 is 79394346.

It is not a de Polignac number, because 64349397 - 2² = 64349393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64349393) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 122778 + ... + 123300.

Almost surely, 2^64349397 is an apocalyptic number.

It is an amenable number.

64349397 is a deficient number, since it is larger than the sum of its proper divisors (51299499).

64349397 is a wasteful number, since it uses less digits than its factorization.

64349397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 564 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 64349397 is about 8021.8075893155. The cubic root of 64349397 is about 400.7265897857.

It can be divided in two parts, 64349 and 397, that added together give a palindrome (64746).

The spelling of 64349397 in words is "sixty-four million, three hundred forty-nine thousand, three hundred ninety-seven".