70968640 has 56 divisors (see below), whose sum is σ = 169712640. Its totient is φ = 28267008.

The previous prime is 70968631. The next prime is 70968661. The reversal of 70968640 is 4686907.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 70968593 and 70968602.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 147921 + ... + 148399.

Almost surely, 2^70968640 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 70968640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84856320).

70968640 is an abundant number, since it is smaller than the sum of its proper divisors (98744000).

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

70968640 is a wasteful number, since it uses less digits than its factorization.

70968640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 70968640 is about 8424.2886940085. The cubic root of 70968640 is about 414.0208006850.

The spelling of 70968640 in words is "seventy million, nine hundred sixty-eight thousand, six hundred forty".