64503937 has 4 divisors (see below), whose sum is σ = 67308480. Its totient is φ = 61699396.

The previous prime is 64503931. The next prime is 64503941. The reversal of 64503937 is 73930546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73930546 = 2 ⋅36965273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64503937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64503896 and 64503905.

It is not an unprimeable number, because it can be changed into a prime (64503931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402237 + ... + 1402282.

It is an arithmetic number, because the mean of its divisors is an integer number (16827120).

Almost surely, 2^64503937 is an apocalyptic number.

It is an amenable number.

64503937 is a deficient number, since it is larger than the sum of its proper divisors (2804543).

64503937 is a wasteful number, since it uses less digits than its factorization.

64503937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804542.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 64503937 is about 8031.4343052782. The cubic root of 64503937 is about 401.0471251802.

The spelling of 64503937 in words is "sixty-four million, five hundred three thousand, nine hundred thirty-seven".