60640511 has 4 divisors (see below), whose sum is σ = 60806112. Its totient is φ = 60474912.

The previous prime is 60640507. The next prime is 60640519. The reversal of 60640511 is 11504606.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11504606 = 2 ⋅5752303.

It is a cyclic number.

It is not a de Polignac number, because 60640511 - 2² = 60640507 is a prime.

It is a super-2 number, since 2×60640511² = 7354543148682242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60640519) 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, 82250 + ... + 82983.

It is an arithmetic number, because the mean of its divisors is an integer number (15201528).

Almost surely, 2^60640511 is an apocalyptic number.

60640511 is a deficient number, since it is larger than the sum of its proper divisors (165601).

60640511 is a wasteful number, since it uses less digits than its factorization.

60640511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165600.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 60640511 is about 7787.2017438872. The cubic root of 60640511 is about 392.8749005621.

The spelling of 60640511 in words is "sixty million, six hundred forty thousand, five hundred eleven".