70703640 has 96 divisors (see below), whose sum is σ = 262622880. Its totient is φ = 16160256.

The previous prime is 70703623. The next prime is 70703641. The reversal of 70703640 is 4630707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70703641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11509 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (2735655).

Almost surely, 2^70703640 is an apocalyptic number.

70703640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70703640 is an abundant number, since it is smaller than the sum of its proper divisors (191919240).

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

70703640 is a wasteful number, since it uses less digits than its factorization.

70703640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28081 (or 28074 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 70703640 is about 8408.5456530841. The cubic root of 70703640 is about 413.5048340223.

The spelling of 70703640 in words is "seventy million, seven hundred three thousand, six hundred forty".