67740690 has 16 divisors (see below), whose sum is σ = 162577728. Its totient is φ = 18064176.

The previous prime is 67740689. The next prime is 67740691. The reversal of 67740690 is 9604776.

It is an interprime number because it is at equal distance from previous prime (67740689) and next prime (67740691).

It is a super-2 number, since 2×67740690² = 9177602163352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67740691) 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, 1128982 + ... + 1129041.

It is an arithmetic number, because the mean of its divisors is an integer number (10161108).

Almost surely, 2^67740690 is an apocalyptic number.

67740690 is an abundant number, since it is smaller than the sum of its proper divisors (94837038).

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

67740690 is a wasteful number, since it uses less digits than its factorization.

67740690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258033.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 67740690 is about 8230.4732549228. The cubic root of 67740690 is about 407.6460189069.

The spelling of 67740690 in words is "sixty-seven million, seven hundred forty thousand, six hundred ninety".