68211470 has 32 divisors (see below), whose sum is σ = 127733760. Its totient is φ = 26197920.

The previous prime is 68211443. The next prime is 68211499. The reversal of 68211470 is 7411286.

68211470 = 810² + 811² + ... + 902².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42299 + ... + 43881.

It is an arithmetic number, because the mean of its divisors is an integer number (3991680).

Almost surely, 2^68211470 is an apocalyptic number.

68211470 is a deficient number, since it is larger than the sum of its proper divisors (59522290).

68211470 is a wasteful number, since it uses less digits than its factorization.

68211470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 68211470 is about 8259.0235500330. The cubic root of 68211470 is about 408.5881839138.

The spelling of 68211470 in words is "sixty-eight million, two hundred eleven thousand, four hundred seventy".