64935437 has 12 divisors (see below), whose sum is σ = 78143580. Its totient is φ = 53738496.

The previous prime is 64935433. The next prime is 64935449. The reversal of 64935437 is 73453946.

It can be written as a sum of positive squares in 2 ways, for example, as 28526281 + 36409156 = 5341^2 + 6034^2 .

It is not a de Polignac number, because 64935437 - 2² = 64935433 is a prime.

It is a super-2 number, since 2×64935437² = 8433221956761938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64935394 and 64935403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64935433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21428 + ... + 24269.

It is an arithmetic number, because the mean of its divisors is an integer number (6511965).

Almost surely, 2^64935437 is an apocalyptic number.

It is an amenable number.

64935437 is a deficient number, since it is larger than the sum of its proper divisors (13208143).

64935437 is a wasteful number, since it uses less digits than its factorization.

64935437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45740 (or 45733 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The square root of 64935437 is about 8058.2527262428. The cubic root of 64935437 is about 401.9394086215.

The spelling of 64935437 in words is "sixty-four million, nine hundred thirty-five thousand, four hundred thirty-seven".