65277138 has 8 divisors (see below), whose sum is σ = 130554288. Its totient is φ = 21759044.

The previous prime is 65277133. The next prime is 65277167. The reversal of 65277138 is 83177256.

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

65277138 is an admirable number.

It is a super-2 number, since 2×65277138² = 8522209490942088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65277096 and 65277105.

It is not an unprimeable number, because it can be changed into a prime (65277131) 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, 5439756 + ... + 5439767.

It is an arithmetic number, because the mean of its divisors is an integer number (16319286).

Almost surely, 2^65277138 is an apocalyptic number.

65277138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65277138 is a wasteful number, since it uses less digits than its factorization.

65277138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10879528.

The product of its digits is 70560, while the sum is 39.

The square root of 65277138 is about 8079.4268361066. The cubic root of 65277138 is about 402.6431994362.

The spelling of 65277138 in words is "sixty-five million, two hundred seventy-seven thousand, one hundred thirty-eight".