70761730 has 32 divisors (see below), whose sum is σ = 138411504. Its totient is φ = 25890816.

The previous prime is 70761727. The next prime is 70761737. The reversal of 70761730 is 3716707.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 151321 + 70610409 = 389^2 + 8403^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70761692 and 70761701.

It is not an unprimeable number, because it can be changed into a prime (70761737) 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 15 ways as a sum of consecutive naturals, for example, 12282 + ... + 17098.

Almost surely, 2^70761730 is an apocalyptic number.

70761730 is a deficient number, since it is larger than the sum of its proper divisors (67649774).

70761730 is a wasteful number, since it uses less digits than its factorization.

70761730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 70761730 is about 8411.9991678554. Note that the first 3 decimals coincide. The cubic root of 70761730 is about 413.6180479973.

The spelling of 70761730 in words is "seventy million, seven hundred sixty-one thousand, seven hundred thirty".