740551857 has 4 divisors (see below), whose sum is σ = 987402480. Its totient is φ = 493701236.

The previous prime is 740551849. The next prime is 740551873. The reversal of 740551857 is 758155047.

740551857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 740551857 - 2³ = 740551849 is a prime.

It is a super-2 number, since 2×740551857² = 1096834105812296898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (740551817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123425307 + ... + 123425312.

It is an arithmetic number, because the mean of its divisors is an integer number (246850620).

Almost surely, 2^740551857 is an apocalyptic number.

It is an amenable number.

740551857 is a deficient number, since it is larger than the sum of its proper divisors (246850623).

740551857 is a wasteful number, since it uses less digits than its factorization.

740551857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246850622.

The product of its (nonzero) digits is 196000, while the sum is 42.

The square root of 740551857 is about 27213.0824604638. The cubic root of 740551857 is about 904.7289592575.

The spelling of 740551857 in words is "seven hundred forty million, five hundred fifty-one thousand, eight hundred fifty-seven".