761421487 has 2 divisors, whose sum is σ = 761421488. Its totient is φ = 761421486.

The previous prime is 761421481. The next prime is 761421539. The reversal of 761421487 is 784124167.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 761421487 - 2⁷ = 761421359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761421481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380710743 + 380710744.

It is an arithmetic number, because the mean of its divisors is an integer number (380710744).

Almost surely, 2^761421487 is an apocalyptic number.

761421487 is a deficient number, since it is larger than the sum of its proper divisors (1).

761421487 is an equidigital number, since it uses as much as digits as its factorization.

761421487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The square root of 761421487 is about 27593.8668366722. The cubic root of 761421487 is about 913.1491294592.

The spelling of 761421487 in words is "seven hundred sixty-one million, four hundred twenty-one thousand, four hundred eighty-seven".