65629730 has 8 divisors (see below), whose sum is σ = 118133532. Its totient is φ = 26251888.

The previous prime is 65629727. The next prime is 65629763. The reversal of 65629730 is 3792656.

It can be written as a sum of positive squares in 2 ways, for example, as 58874929 + 6754801 = 7673^2 + 2599^2 .

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

It is a super-2 number, since 2×65629730² = 8614522919745800, which contains 22 as substring.

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, 3281477 + ... + 3281496.

Almost surely, 2^65629730 is an apocalyptic number.

65629730 is a deficient number, since it is larger than the sum of its proper divisors (52503802).

65629730 is a wasteful number, since it uses less digits than its factorization.

65629730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6562980.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 65629730 is about 8101.2178096876. The cubic root of 65629730 is about 403.3668520892.

The spelling of 65629730 in words is "sixty-five million, six hundred twenty-nine thousand, seven hundred thirty".