70825720 has 32 divisors (see below), whose sum is σ = 182124000. Its totient is φ = 24283008.

The previous prime is 70825691. The next prime is 70825721. The reversal of 70825720 is 2752807.

It is a super-2 number, since 2×70825720² = 10032565227036800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70825721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126195 + ... + 126754.

It is an arithmetic number, because the mean of its divisors is an integer number (5691375).

Almost surely, 2^70825720 is an apocalyptic number.

70825720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70825720 is an abundant number, since it is smaller than the sum of its proper divisors (111298280).

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

70825720 is a wasteful number, since it uses less digits than its factorization.

70825720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252967 (or 252963 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 70825720 is about 8415.8018037499. The cubic root of 70825720 is about 413.7426890272.

The spelling of 70825720 in words is "seventy million, eight hundred twenty-five thousand, seven hundred twenty".