64423477 has 2 divisors, whose sum is σ = 64423478. Its totient is φ = 64423476.

The previous prime is 64423459. The next prime is 64423493. The reversal of 64423477 is 77432446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39112516 + 25310961 = 6254^2 + 5031^2 .

It is a cyclic number.

It is not a de Polignac number, because 64423477 - 2⁷ = 64423349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64423427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32211738 + 32211739.

It is an arithmetic number, because the mean of its divisors is an integer number (32211739).

Almost surely, 2^64423477 is an apocalyptic number.

It is an amenable number.

64423477 is a deficient number, since it is larger than the sum of its proper divisors (1).

64423477 is an equidigital number, since it uses as much as digits as its factorization.

64423477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 37.

The square root of 64423477 is about 8026.4236743396. The cubic root of 64423477 is about 400.8803049866.

The spelling of 64423477 in words is "sixty-four million, four hundred twenty-three thousand, four hundred seventy-seven".