64771330 has 32 divisors (see below), whose sum is σ = 128487744. Its totient is φ = 23357376.

The previous prime is 64771327. The next prime is 64771339. The reversal of 64771330 is 3317746.

It is a junction number, because it is equal to n+sod(n) for n = 64771292 and 64771301.

It is not an unprimeable number, because it can be changed into a prime (64771339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204 + ... + 11383.

It is an arithmetic number, because the mean of its divisors is an integer number (4015242).

Almost surely, 2^64771330 is an apocalyptic number.

64771330 is a deficient number, since it is larger than the sum of its proper divisors (63716414).

64771330 is a wasteful number, since it uses less digits than its factorization.

64771330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 64771330 is about 8048.0637422923. The cubic root of 64771330 is about 401.6005247595.

The spelling of 64771330 in words is "sixty-four million, seven hundred seventy-one thousand, three hundred thirty".