68971770 has 64 divisors (see below), whose sum is σ = 210205440. Its totient is φ = 15764544.

The previous prime is 68971769. The next prime is 68971781. The reversal of 68971770 is 7717986.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 16357 + ... + 20136.

It is an arithmetic number, because the mean of its divisors is an integer number (3284460).

Almost surely, 2^68971770 is an apocalyptic number.

68971770 is an abundant number, since it is smaller than the sum of its proper divisors (141233670).

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

68971770 is a wasteful number, since it uses less digits than its factorization.

68971770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36516 (or 36510 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 68971770 is about 8304.9244427629. The cubic root of 68971770 is about 410.1006494917.

The spelling of 68971770 in words is "sixty-eight million, nine hundred seventy-one thousand, seven hundred seventy".