61299930 has 32 divisors (see below), whose sum is σ = 148583808. Its totient is φ = 16184000.

The previous prime is 61299923. The next prime is 61299949. The reversal of 61299930 is 3999216.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7086 + ... + 13145.

It is an arithmetic number, because the mean of its divisors is an integer number (4643244).

Almost surely, 2^61299930 is an apocalyptic number.

61299930 is an abundant number, since it is smaller than the sum of its proper divisors (87283878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61299930 is a wasteful number, since it uses less digits than its factorization.

61299930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20342.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 61299930 is about 7829.4271821124. The cubic root of 61299930 is about 394.2938405998.

The spelling of 61299930 in words is "sixty-one million, two hundred ninety-nine thousand, nine hundred thirty".