68663770 has 16 divisors (see below), whose sum is σ = 141251328. Its totient is φ = 23541840.

The previous prime is 68663761. The next prime is 68663773. The reversal of 68663770 is 7736686.

It is a super-2 number, since 2×68663770² = 9429426621225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68663773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490386 + ... + 490525.

It is an arithmetic number, because the mean of its divisors is an integer number (8828208).

Almost surely, 2^68663770 is an apocalyptic number.

68663770 is an abundant number, since it is smaller than the sum of its proper divisors (72587558).

68663770 is a wasteful number, since it uses less digits than its factorization.

68663770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980925.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 68663770 is about 8286.3604797281. The cubic root of 68663770 is about 409.4892907391.

The spelling of 68663770 in words is "sixty-eight million, six hundred sixty-three thousand, seven hundred seventy".