67401487 has 2 divisors, whose sum is σ = 67401488. Its totient is φ = 67401486.

The previous prime is 67401479. The next prime is 67401553. The reversal of 67401487 is 78410476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67401487 - 2³ = 67401479 is a prime.

It is a super-2 number, since 2×67401487² = 9085920899622338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67401437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33700743 + 33700744.

It is an arithmetic number, because the mean of its divisors is an integer number (33700744).

Almost surely, 2^67401487 is an apocalyptic number.

67401487 is a deficient number, since it is larger than the sum of its proper divisors (1).

67401487 is an equidigital number, since it uses as much as digits as its factorization.

67401487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 67401487 is about 8209.8408632567. The cubic root of 67401487 is about 406.9644679584.

The spelling of 67401487 in words is "sixty-seven million, four hundred one thousand, four hundred eighty-seven".