64283977 has 2 divisors, whose sum is σ = 64283978. Its totient is φ = 64283976.

The previous prime is 64283963. The next prime is 64283983. The reversal of 64283977 is 77938246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64064016 + 219961 = 8004^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 64283977 - 2²³ = 55895369 is a prime.

It is not a weakly prime, because it can be changed into another prime (64283917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32141988 + 32141989.

It is an arithmetic number, because the mean of its divisors is an integer number (32141989).

Almost surely, 2^64283977 is an apocalyptic number.

It is an amenable number.

64283977 is a deficient number, since it is larger than the sum of its proper divisors (1).

64283977 is an equidigital number, since it uses as much as digits as its factorization.

64283977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 64283977 is about 8017.7289178420. The cubic root of 64283977 is about 400.5907458688.

The spelling of 64283977 in words is "sixty-four million, two hundred eighty-three thousand, nine hundred seventy-seven".