65649142 has 16 divisors (see below), whose sum is σ = 111630960. Its totient is φ = 28704672.

The previous prime is 65649113. The next prime is 65649151. The reversal of 65649142 is 24194656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65953 + ... + 66940.

It is an arithmetic number, because the mean of its divisors is an integer number (6976935).

Almost surely, 2^65649142 is an apocalyptic number.

65649142 is a deficient number, since it is larger than the sum of its proper divisors (45981818).

65649142 is a wasteful number, since it uses less digits than its factorization.

65649142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132927.

The product of its digits is 51840, while the sum is 37.

The square root of 65649142 is about 8102.4158125833. The cubic root of 65649142 is about 403.4066175301.

The spelling of 65649142 in words is "sixty-five million, six hundred forty-nine thousand, one hundred forty-two".