68152690 has 16 divisors (see below), whose sum is σ = 123214680. Its totient is φ = 27141120.

The previous prime is 68152681. The next prime is 68152699. The reversal of 68152690 is 9625186.

It is an interprime number because it is at equal distance from previous prime (68152681) and next prime (68152699).

It can be written as a sum of positive squares in 4 ways, for example, as 58110129 + 10042561 = 7623^2 + 3169^2 .

It is a super-2 number, since 2×68152690² = 9289578308472200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68152699) 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, 12591 + ... + 17170.

Almost surely, 2^68152690 is an apocalyptic number.

68152690 is a deficient number, since it is larger than the sum of its proper divisors (55061990).

68152690 is a wasteful number, since it uses less digits than its factorization.

68152690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29997.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 68152690 is about 8255.4642510279. The cubic root of 68152690 is about 408.4707856940.

The spelling of 68152690 in words is "sixty-eight million, one hundred fifty-two thousand, six hundred ninety".