70316640 has 192 divisors, whose sum is σ = 252745920. Its totient is φ = 18247680.

The previous prime is 70316633. The next prime is 70316651. The reversal of 70316640 is 4661307.

70316640 is a `hidden beast` number, since 7 + 0 + 3 + 16 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176922 + ... + 177318.

It is an arithmetic number, because the mean of its divisors is an integer number (1316385).

Almost surely, 2^70316640 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 70316640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126372960).

70316640 is an abundant number, since it is smaller than the sum of its proper divisors (182429280).

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

70316640 is a wasteful number, since it uses less digits than its factorization.

70316640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 448 counting only the distinct ones).

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

The square root of 70316640 is about 8385.5017738952. The cubic root of 70316640 is about 412.7490066810.

Adding to 70316640 its reverse (4661307), we get a palindrome (74977947).

The spelling of 70316640 in words is "seventy million, three hundred sixteen thousand, six hundred forty".