70663340 has 48 divisors (see below), whose sum is σ = 166277664. Its totient is φ = 24998400.

The previous prime is 70663331. The next prime is 70663349. The reversal of 70663340 is 4336607.

It is an interprime number because it is at equal distance from previous prime (70663331) and next prime (70663349).

It is not an unprimeable number, because it can be changed into a prime (70663349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3800 + ... + 12480.

It is an arithmetic number, because the mean of its divisors is an integer number (3464118).

Almost surely, 2^70663340 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 70663340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83138832).

70663340 is an abundant number, since it is smaller than the sum of its proper divisors (95614324).

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

70663340 is a wasteful number, since it uses less digits than its factorization.

70663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8738 (or 8736 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 70663340 is about 8406.1489399130. The cubic root of 70663340 is about 413.4262552676.

Adding to 70663340 its reverse (4336607), we get a palindrome (74999947).

It can be divided in two parts, 706 and 63340, that added together give a palindrome (64046).

The spelling of 70663340 in words is "seventy million, six hundred sixty-three thousand, three hundred forty".