785540957 has 2 divisors, whose sum is σ = 785540958. Its totient is φ = 785540956.

The previous prime is 785540923. The next prime is 785540983. The reversal of 785540957 is 759045587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582449956 + 203091001 = 24134^2 + 14251^2 .

It is a cyclic number.

It is not a de Polignac number, because 785540957 - 2²⁶ = 718432093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (785540257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392770478 + 392770479.

It is an arithmetic number, because the mean of its divisors is an integer number (392770479).

Almost surely, 2^785540957 is an apocalyptic number.

It is an amenable number.

785540957 is a deficient number, since it is larger than the sum of its proper divisors (1).

785540957 is an equidigital number, since it uses as much as digits as its factorization.

785540957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764000, while the sum is 50.

The square root of 785540957 is about 28027.5035813038. The cubic root of 785540957 is about 922.6909858366.

The spelling of 785540957 in words is "seven hundred eighty-five million, five hundred forty thousand, nine hundred fifty-seven".