64872037 has 2 divisors, whose sum is σ = 64872038. Its totient is φ = 64872036.

The previous prime is 64872007. The next prime is 64872047. The reversal of 64872037 is 73027846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62315236 + 2556801 = 7894^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 64872037 - 2¹¹ = 64869989 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64871987 and 64872005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64872007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32436018 + 32436019.

It is an arithmetic number, because the mean of its divisors is an integer number (32436019).

Almost surely, 2^64872037 is an apocalyptic number.

It is an amenable number.

64872037 is a deficient number, since it is larger than the sum of its proper divisors (1).

64872037 is an equidigital number, since it uses as much as digits as its factorization.

64872037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 64872037 is about 8054.3179102889. The cubic root of 64872037 is about 401.8085542547.

The spelling of 64872037 in words is "sixty-four million, eight hundred seventy-two thousand, thirty-seven".