65142623 has 24 divisors (see below), whose sum is σ = 85203552. Its totient is φ = 48489984.

The previous prime is 65142617. The next prime is 65142629. The reversal of 65142623 is 32624156.

It is an interprime number because it is at equal distance from previous prime (65142617) and next prime (65142629).

It is not a de Polignac number, because 65142623 - 2¹⁰ = 65141599 is a prime.

It is a super-2 number, since 2×65142623² = 8487122662640258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25061 + ... + 27537.

It is an arithmetic number, because the mean of its divisors is an integer number (3550148).

Almost surely, 2^65142623 is an apocalyptic number.

65142623 is a deficient number, since it is larger than the sum of its proper divisors (20060929).

65142623 is a wasteful number, since it uses less digits than its factorization.

65142623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531 (or 2514 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 65142623 is about 8071.0980046088. The cubic root of 65142623 is about 402.3664369156.

Adding to 65142623 its reverse (32624156), we get a palindrome (97766779).

The spelling of 65142623 in words is "sixty-five million, one hundred forty-two thousand, six hundred twenty-three".