65277140 has 24 divisors (see below), whose sum is σ = 137259360. Its totient is φ = 26077088.

The previous prime is 65277133. The next prime is 65277167. The reversal of 65277140 is 4177256.

It is a super-2 number, since 2×65277140² = 8522210013159200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65277097 and 65277106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18779 + ... + 21981.

It is an arithmetic number, because the mean of its divisors is an integer number (5719140).

Almost surely, 2^65277140 is an apocalyptic number.

It is an amenable number.

65277140 is an abundant number, since it is smaller than the sum of its proper divisors (71982220).

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

65277140 is a wasteful number, since it uses less digits than its factorization.

65277140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231 (or 4229 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 65277140 is about 8079.4269598778. The cubic root of 65277140 is about 402.6432035483.

The spelling of 65277140 in words is "sixty-five million, two hundred seventy-seven thousand, one hundred forty".