65553372 has 18 divisors (see below), whose sum is σ = 165704448. Its totient is φ = 21851112.

The previous prime is 65553361. The next prime is 65553407. The reversal of 65553372 is 27335556.

65553372 is a `hidden beast` number, since 6 + 55 + 533 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1820927 = 65553372 / (6 + 5 + 5 + 5 + 3 + 3 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 910428 + ... + 910499.

Almost surely, 2^65553372 is an apocalyptic number.

It is an amenable number.

65553372 is an abundant number, since it is smaller than the sum of its proper divisors (100151076).

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

65553372 is a wasteful number, since it uses less digits than its factorization.

65553372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820937 (or 1820932 counting only the distinct ones).

The product of its digits is 94500, while the sum is 36.

The square root of 65553372 is about 8096.5036898652. The cubic root of 65553372 is about 403.2103567587.

The spelling of 65553372 in words is "sixty-five million, five hundred fifty-three thousand, three hundred seventy-two".