64143748 has 6 divisors (see below), whose sum is σ = 112251566. Its totient is φ = 32071872.

The previous prime is 64143731. The next prime is 64143773. The reversal of 64143748 is 84734146.

It can be written as a sum of positive squares in only one way, i.e., 35070084 + 29073664 = 5922^2 + 5392^2 .

It is a super-2 number, since 2×64143748² = 8228840814975008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8017965 + ... + 8017972.

Almost surely, 2^64143748 is an apocalyptic number.

It is an amenable number.

64143748 is a deficient number, since it is larger than the sum of its proper divisors (48107818).

64143748 is a wasteful number, since it uses less digits than its factorization.

64143748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16035941 (or 16035939 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 64143748 is about 8008.9792108608. The cubic root of 64143748 is about 400.2992510662.

The spelling of 64143748 in words is "sixty-four million, one hundred forty-three thousand, seven hundred forty-eight".