65453620 has 12 divisors (see below), whose sum is σ = 137452644. Its totient is φ = 26181440.

The previous prime is 65453603. The next prime is 65453623. The reversal of 65453620 is 2635456.

It can be written as a sum of positive squares in 2 ways, for example, as 10278436 + 55175184 = 3206^2 + 7428^2 .

It is a super-2 number, since 2×65453620² = 8568352742208800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65453623) 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, 1636321 + ... + 1636360.

It is an arithmetic number, because the mean of its divisors is an integer number (11454387).

Almost surely, 2^65453620 is an apocalyptic number.

It is an amenable number.

65453620 is an abundant number, since it is smaller than the sum of its proper divisors (71999024).

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

65453620 is a wasteful number, since it uses less digits than its factorization.

65453620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272690 (or 3272688 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 65453620 is about 8090.3411547351. The cubic root of 65453620 is about 403.0057323594.

The spelling of 65453620 in words is "sixty-five million, four hundred fifty-three thousand, six hundred twenty".