61492816 has 160 divisors (see below), whose sum is σ = 162846720. Its totient is φ = 21772800.

The previous prime is 61492813. The next prime is 61492817. The reversal of 61492816 is 61829416.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61492813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 866061 + ... + 866131.

It is an arithmetic number, because the mean of its divisors is an integer number (1017792).

Almost surely, 2^61492816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61492816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81423360).

61492816 is an abundant number, since it is smaller than the sum of its proper divisors (101353904).

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

61492816 is a wasteful number, since it uses less digits than its factorization.

61492816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 147 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 61492816 is about 7841.7355221915. The cubic root of 61492816 is about 394.7069684820.

The spelling of 61492816 in words is "sixty-one million, four hundred ninety-two thousand, eight hundred sixteen".