690730521070 has 64 divisors (see below), whose sum is σ = 1319250240000. Its totient is φ = 259937225856.

The previous prime is 690730520939. The next prime is 690730521137. The reversal of 690730521070 is 70125037096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5158831 + ... + 5291029.

It is an arithmetic number, because the mean of its divisors is an integer number (20613285000).

Almost surely, 2^690730521070 is an apocalyptic number.

690730521070 is a deficient number, since it is larger than the sum of its proper divisors (628519718930).

690730521070 is a wasteful number, since it uses less digits than its factorization.

690730521070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132697.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 690730521070 in words is "six hundred ninety billion, seven hundred thirty million, five hundred twenty-one thousand, seventy".