65550672 has 120 divisors (see below), whose sum is σ = 207174240. Its totient is φ = 19165440.

The previous prime is 65550637. The next prime is 65550689. The reversal of 65550672 is 27605556.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45223 + ... + 46649.

It is an arithmetic number, because the mean of its divisors is an integer number (1726452).

Almost surely, 2^65550672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65550672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103587120).

65550672 is an abundant number, since it is smaller than the sum of its proper divisors (141623568).

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

65550672 is a wasteful number, since it uses less digits than its factorization.

65550672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 65550672 is about 8096.3369495099. The cubic root of 65550672 is about 403.2048208985.

Subtracting from 65550672 its reverse (27605556), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 65550672 in words is "sixty-five million, five hundred fifty thousand, six hundred seventy-two".