65442770 has 8 divisors (see below), whose sum is σ = 117797004. Its totient is φ = 26177104.

The previous prime is 65442749. The next prime is 65442779. The reversal of 65442770 is 7724456.

It can be written as a sum of positive squares in 2 ways, for example, as 64048009 + 1394761 = 8003^2 + 1181^2 .

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

It is a super-2 number, since 2×65442770² = 8565512290545800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65442770.

It is not an unprimeable number, because it can be changed into a prime (65442779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3272129 + ... + 3272148.

Almost surely, 2^65442770 is an apocalyptic number.

65442770 is a deficient number, since it is larger than the sum of its proper divisors (52354234).

65442770 is a wasteful number, since it uses less digits than its factorization.

65442770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6544284.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 65442770 is about 8089.6705742570. The cubic root of 65442770 is about 402.9834628815.

The spelling of 65442770 in words is "sixty-five million, four hundred forty-two thousand, seven hundred seventy".