65401018 has 4 divisors (see below), whose sum is σ = 98101530. Its totient is φ = 32700508.

The previous prime is 65401009. The next prime is 65401031. The reversal of 65401018 is 81010456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52027369 + 13373649 = 7213^2 + 3657^2 .

It is a super-3 number, since 3×65401018³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65400983 and 65401001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16350253 + ... + 16350256.

Almost surely, 2^65401018 is an apocalyptic number.

65401018 is a deficient number, since it is larger than the sum of its proper divisors (32700512).

65401018 is a wasteful number, since it uses less digits than its factorization.

65401018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32700511.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 65401018 is about 8087.0895877318. The cubic root of 65401018 is about 402.8977445001.

The spelling of 65401018 in words is "sixty-five million, four hundred one thousand, eighteen".