7640461 has 4 divisors (see below), whose sum is σ = 7803072. Its totient is φ = 7477852.

The previous prime is 7640453. The next prime is 7640471. The reversal of 7640461 is 1640467.

7640461 is nontrivially palindromic in base 11.

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 7640461 - 2³ = 7640453 is a prime.

It is a Duffinian number.

7640461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640411) 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, 81235 + ... + 81328.

It is an arithmetic number, because the mean of its divisors is an integer number (1950768).

Almost surely, 2^7640461 is an apocalyptic number.

It is an amenable number.

7640461 is a deficient number, since it is larger than the sum of its proper divisors (162611).

7640461 is a wasteful number, since it uses less digits than its factorization.

7640461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162610.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7640461 is about 2764.1383829324. The cubic root of 7640461 is about 196.9578014350.

The spelling of 7640461 in words is "seven million, six hundred forty thousand, four hundred sixty-one".