61172016 has 40 divisors (see below), whose sum is σ = 158442240. Its totient is φ = 20337216.

The previous prime is 61171993. The next prime is 61172071. The reversal of 61172016 is 61027116.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 19621 + ... + 22523.

It is an arithmetic number, because the mean of its divisors is an integer number (3961056).

Almost surely, 2^61172016 is an apocalyptic number.

It is an amenable number.

61172016 is an abundant number, since it is smaller than the sum of its proper divisors (97270224).

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

61172016 is a wasteful number, since it uses less digits than its factorization.

61172016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 61172016 is about 7821.2541193852. The cubic root of 61172016 is about 394.0193931722.

It can be divided in two parts, 611 and 72016, that added together give a palindrome (72627).

The spelling of 61172016 in words is "sixty-one million, one hundred seventy-two thousand, sixteen".