68153770 has 16 divisors (see below), whose sum is σ = 126907560. Its totient is φ = 26321344.

The previous prime is 68153759. The next prime is 68153773. The reversal of 68153770 is 7735186.

It can be written as a sum of positive squares in 4 ways, for example, as 51022449 + 17131321 = 7143^2 + 4139^2 .

It is not an unprimeable number, because it can be changed into a prime (68153773) 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, 117217 + ... + 117796.

Almost surely, 2^68153770 is an apocalyptic number.

68153770 is a deficient number, since it is larger than the sum of its proper divisors (58753790).

68153770 is a wasteful number, since it uses less digits than its factorization.

68153770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235049.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 68153770 is about 8255.5296619902. The cubic root of 68153770 is about 408.4729433302.

It can be divided in two parts, 6815 and 3770, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 68153770 in words is "sixty-eight million, one hundred fifty-three thousand, seven hundred seventy".