70108640 has 48 divisors (see below), whose sum is σ = 189296352. Its totient is φ = 24036864.

The previous prime is 70108637. The next prime is 70108667. The reversal of 70108640 is 4680107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30179 + ... + 32418.

It is an arithmetic number, because the mean of its divisors is an integer number (3943674).

Almost surely, 2^70108640 is an apocalyptic number.

70108640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70108640 is an abundant number, since it is smaller than the sum of its proper divisors (119187712).

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

70108640 is a wasteful number, since it uses less digits than its factorization.

70108640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62619 (or 62611 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 70108640 is about 8373.0902300166. The cubic root of 70108640 is about 412.3416276025.

Adding to 70108640 its reverse (4680107), we get a palindrome (74788747).

The spelling of 70108640 in words is "seventy million, one hundred eight thousand, six hundred forty".