67540790 has 16 divisors (see below), whose sum is σ = 122381280. Its totient is φ = 26836800.

The previous prime is 67540787. The next prime is 67540793. The reversal of 67540790 is 9704576.

It is an interprime number because it is at equal distance from previous prime (67540787) and next prime (67540793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67540793) 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, 20855 + ... + 23874.

It is an arithmetic number, because the mean of its divisors is an integer number (7648830).

Almost surely, 2^67540790 is an apocalyptic number.

67540790 is a deficient number, since it is larger than the sum of its proper divisors (54840490).

67540790 is a wasteful number, since it uses less digits than its factorization.

67540790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44887.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 67540790 is about 8218.3203880112. The cubic root of 67540790 is about 407.2446415998.

The spelling of 67540790 in words is "sixty-seven million, five hundred forty thousand, seven hundred ninety".