65415401 has 4 divisors (see below), whose sum is σ = 65571204. Its totient is φ = 65259600.

The previous prime is 65415379. The next prime is 65415431. The reversal of 65415401 is 10451456.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26677225 + 38738176 = 5165^2 + 6224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65415401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65415431) 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, 77270 + ... + 78111.

It is an arithmetic number, because the mean of its divisors is an integer number (16392801).

Almost surely, 2^65415401 is an apocalyptic number.

It is an amenable number.

65415401 is a deficient number, since it is larger than the sum of its proper divisors (155803).

65415401 is a wasteful number, since it uses less digits than its factorization.

65415401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155802.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 65415401 is about 8087.9787957190. The cubic root of 65415401 is about 402.9272774426.

Adding to 65415401 its reverse (10451456), we get a palindrome (75866857).

The spelling of 65415401 in words is "sixty-five million, four hundred fifteen thousand, four hundred one".