64123412 has 6 divisors (see below), whose sum is σ = 112215978. Its totient is φ = 32061704.

The previous prime is 64123399. The next prime is 64123421. The reversal of 64123412 is 21432146.

It can be written as a sum of positive squares in only one way, i.e., 62948356 + 1175056 = 7934^2 + 1084^2 .

It is a super-2 number, since 2×64123412² = 8223623933043488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8015423 + ... + 8015430.

It is an arithmetic number, because the mean of its divisors is an integer number (18702663).

Almost surely, 2^64123412 is an apocalyptic number.

It is an amenable number.

64123412 is a deficient number, since it is larger than the sum of its proper divisors (48092566).

64123412 is a wasteful number, since it uses less digits than its factorization.

64123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16030857 (or 16030855 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 64123412 is about 8007.7095351917. The cubic root of 64123412 is about 400.2569432484.

Adding to 64123412 its reverse (21432146), we get a palindrome (85555558).

The spelling of 64123412 in words is "sixty-four million, one hundred twenty-three thousand, four hundred twelve".