70661232 has 60 divisors (see below), whose sum is σ = 201129240. Its totient is φ = 23151744.

The previous prime is 70661219. The next prime is 70661233. The reversal of 70661232 is 23216607.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70661196 and 70661205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70661233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4338 + ... + 12654.

It is an arithmetic number, because the mean of its divisors is an integer number (3352154).

Almost surely, 2^70661232 is an apocalyptic number.

70661232 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70661232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100564620).

70661232 is an abundant number, since it is smaller than the sum of its proper divisors (130468008).

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

70661232 is a wasteful number, since it uses less digits than its factorization.

70661232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8390 (or 8381 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 70661232 is about 8406.0235545709. The cubic root of 70661232 is about 413.4221441722.

Adding to 70661232 its reverse (23216607), we get a palindrome (93877839).

The spelling of 70661232 in words is "seventy million, six hundred sixty-one thousand, two hundred thirty-two".