64722037 has 8 divisors (see below), whose sum is σ = 69246560. Its totient is φ = 60309360.

The previous prime is 64722029. The next prime is 64722059. The reversal of 64722037 is 73022746.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64722037 - 2³ = 64722029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64722137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26763 + ... + 29080.

It is an arithmetic number, because the mean of its divisors is an integer number (8655820).

Almost surely, 2^64722037 is an apocalyptic number.

It is an amenable number.

64722037 is a deficient number, since it is larger than the sum of its proper divisors (4524523).

64722037 is a wasteful number, since it uses less digits than its factorization.

64722037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55923.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 64722037 is about 8045.0007458048. Note that the first 3 decimals coincide. The cubic root of 64722037 is about 401.4986220679.

The spelling of 64722037 in words is "sixty-four million, seven hundred twenty-two thousand, thirty-seven".