46640257 has 4 divisors (see below), whose sum is σ = 47230720. Its totient is φ = 46049796.

The previous prime is 46640221. The next prime is 46640263. The reversal of 46640257 is 75204664.

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 46640257 - 2¹¹ = 46638209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46640287) 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, 295113 + ... + 295270.

It is an arithmetic number, because the mean of its divisors is an integer number (11807680).

Almost surely, 2^46640257 is an apocalyptic number.

It is an amenable number.

46640257 is a deficient number, since it is larger than the sum of its proper divisors (590463).

46640257 is an equidigital number, since it uses as much as digits as its factorization.

46640257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590462.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 46640257 is about 6829.3672474103. The cubic root of 46640257 is about 359.9595041897.

The spelling of 46640257 in words is "forty-six million, six hundred forty thousand, two hundred fifty-seven".