60999621 has 24 divisors (see below), whose sum is σ = 87672384. Its totient is φ = 37593600.

The previous prime is 60999619. The next prime is 60999623. The reversal of 60999621 is 12699906.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (60999619) and next prime (60999623).

It is not a de Polignac number, because 60999621 - 2¹ = 60999619 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60999623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403896 + ... + 404046.

It is an arithmetic number, because the mean of its divisors is an integer number (3653016).

Almost surely, 2^60999621 is an apocalyptic number.

It is an amenable number.

60999621 is a deficient number, since it is larger than the sum of its proper divisors (26672763).

60999621 is a wasteful number, since it uses less digits than its factorization.

60999621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 60999621 is about 7810.2254128802. The cubic root of 60999621 is about 393.6489030449.

The spelling of 60999621 in words is "sixty million, nine hundred ninety-nine thousand, six hundred twenty-one".