65953404 has 144 divisors (see below), whose sum is σ = 196481376. Its totient is φ = 18432000.

The previous prime is 65953369. The next prime is 65953429. The reversal of 65953404 is 40435956.

It is a happy number.

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 47 ways as a sum of consecutive naturals, for example, 652954 + ... + 653054.

It is an arithmetic number, because the mean of its divisors is an integer number (1364454).

Almost surely, 2^65953404 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 65953404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98240688).

65953404 is an abundant number, since it is smaller than the sum of its proper divisors (130527972).

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

65953404 is a wasteful number, since it uses less digits than its factorization.

65953404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 65953404 is about 8121.1701127362. The cubic root of 65953404 is about 404.0288758238.

It can be divided in two parts, 6595 and 3404, that added together give a palindrome (9999).

The spelling of 65953404 in words is "sixty-five million, nine hundred fifty-three thousand, four hundred four".