61299216 has 60 divisors (see below), whose sum is σ = 187153200. Its totient is φ = 18575040.

The previous prime is 61299197. The next prime is 61299221.

61299216 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17766 + ... + 20933.

It is an arithmetic number, because the mean of its divisors is an integer number (3119220).

Almost surely, 2^61299216 is an apocalyptic number.

61299216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61299216 is an abundant number, since it is smaller than the sum of its proper divisors (125853984).

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

61299216 is a wasteful number, since it uses less digits than its factorization.

61299216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38724 (or 38715 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 61299216 is about 7829.3815847741. The cubic root of 61299216 is about 394.2923097285.

The spelling of 61299216 in words is "sixty-one million, two hundred ninety-nine thousand, two hundred sixteen".