785497651 has 2 divisors, whose sum is σ = 785497652. Its totient is φ = 785497650.

The previous prime is 785497619. The next prime is 785497663. The reversal of 785497651 is 156794587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 785497651 - 2⁵ = 785497619 is a prime.

It is not a weakly prime, because it can be changed into another prime (785497681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392748825 + 392748826.

It is an arithmetic number, because the mean of its divisors is an integer number (392748826).

Almost surely, 2^785497651 is an apocalyptic number.

785497651 is a deficient number, since it is larger than the sum of its proper divisors (1).

785497651 is an equidigital number, since it uses as much as digits as its factorization.

785497651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The square root of 785497651 is about 28026.7310080930. The cubic root of 785497651 is about 922.6740298821.

It can be divided in two parts, 785 and 497651, that added together give a square (498436 = 706²).

The spelling of 785497651 in words is "seven hundred eighty-five million, four hundred ninety-seven thousand, six hundred fifty-one".