70153640 has 32 divisors (see below), whose sum is σ = 161520480. Its totient is φ = 27408192.

The previous prime is 70153619. The next prime is 70153649. The reversal of 70153640 is 4635107.

It is not an unprimeable number, because it can be changed into a prime (70153649) 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 7 ways as a sum of consecutive naturals, for example, 18674 + ... + 22113.

It is an arithmetic number, because the mean of its divisors is an integer number (5047515).

Almost surely, 2^70153640 is an apocalyptic number.

It is an amenable number.

70153640 is an abundant number, since it is smaller than the sum of its proper divisors (91366840).

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

70153640 is a wasteful number, since it uses less digits than its factorization.

70153640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40841 (or 40837 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 70153640 is about 8375.7769788838. The cubic root of 70153640 is about 412.4298307335.

Adding to 70153640 its reverse (4635107), we get a palindrome (74788747).

The spelling of 70153640 in words is "seventy million, one hundred fifty-three thousand, six hundred forty".