4645642 has 4 divisors (see below), whose sum is σ = 6968466. Its totient is φ = 2322820.

The previous prime is 4645639. The next prime is 4645649. The reversal of 4645642 is 2465464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2852721 + 1792921 = 1689^2 + 1339^2 .

It is not an unprimeable number, because it can be changed into a prime (4645649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161409 + ... + 1161412.

Almost surely, 2^4645642 is an apocalyptic number.

4645642 is a deficient number, since it is larger than the sum of its proper divisors (2322824).

4645642 is a wasteful number, since it uses less digits than its factorization.

4645642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322823.

The product of its digits is 23040, while the sum is 31.

The square root of 4645642 is about 2155.3751413617. The cubic root of 4645642 is about 166.8585940096.

The spelling of 4645642 in words is "four million, six hundred forty-five thousand, six hundred forty-two".