64661662 has 8 divisors (see below), whose sum is σ = 104453496. Its totient is φ = 29843832.

The previous prime is 64661657. The next prime is 64661683. The reversal of 64661662 is 26616646.

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

It is a super-2 number, since 2×64661662² = 8362261065204488, 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 in 3 ways as a sum of consecutive naturals, for example, 1243468 + ... + 1243519.

It is an arithmetic number, because the mean of its divisors is an integer number (13056687).

Almost surely, 2^64661662 is an apocalyptic number.

64661662 is a deficient number, since it is larger than the sum of its proper divisors (39791834).

64661662 is a wasteful number, since it uses less digits than its factorization.

64661662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487002.

The product of its digits is 62208, while the sum is 37.

The square root of 64661662 is about 8041.2475400276. The cubic root of 64661662 is about 401.3737392006.

It can be divided in two parts, 6466 and 1662, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 64661662 in words is "sixty-four million, six hundred sixty-one thousand, six hundred sixty-two".