70051660 has 24 divisors (see below), whose sum is σ = 168124320. Its totient is φ = 24017664.

The previous prime is 70051643. The next prime is 70051697. The reversal of 70051660 is 6615007.

70051660 is a modest number, since divided by 51660 gives 700 as remainder.

It is an unprimeable number.

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, 250045 + ... + 250324.

It is an arithmetic number, because the mean of its divisors is an integer number (7005180).

Almost surely, 2^70051660 is an apocalyptic number.

70051660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70051660 is an abundant number, since it is smaller than the sum of its proper divisors (98072660).

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

70051660 is a wasteful number, since it uses less digits than its factorization.

70051660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500385 (or 500383 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 70051660 is about 8369.6869714464. The cubic root of 70051660 is about 412.2298886691.

Adding to 70051660 its reverse (6615007), we get a palindrome (76666667).

The spelling of 70051660 in words is "seventy million, fifty-one thousand, six hundred sixty".