64793986 has 8 divisors (see below), whose sum is σ = 97243020. Its totient is φ = 32379648.

The previous prime is 64793969. The next prime is 64794001. The reversal of 64793986 is 68939746.

It can be written as a sum of positive squares in 2 ways, for example, as 64496961 + 297025 = 8031^2 + 545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351 + ... + 11866.

Almost surely, 2^64793986 is an apocalyptic number.

64793986 is a deficient number, since it is larger than the sum of its proper divisors (32449034).

64793986 is a wasteful number, since it uses less digits than its factorization.

64793986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17348.

The product of its digits is 1959552, while the sum is 52.

The square root of 64793986 is about 8049.4711627535. The cubic root of 64793986 is about 401.6473438323.

Subtracting 64793986 from its reverse (68939746), we obtain a triangular number (4145760 = T₂₈₇₉).

It can be divided in two parts, 647939 and 86, that added together give a square (648025 = 805²).

The spelling of 64793986 in words is "sixty-four million, seven hundred ninety-three thousand, nine hundred eighty-six".