61498536 has 64 divisors (see below), whose sum is σ = 168523200. Its totient is φ = 18547200.

The previous prime is 61498523. The next prime is 61498583. The reversal of 61498536 is 63589416.

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, 73770 + ... + 74598.

It is an arithmetic number, because the mean of its divisors is an integer number (2633175).

Almost surely, 2^61498536 is an apocalyptic number.

61498536 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61498536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84261600).

61498536 is an abundant number, since it is smaller than the sum of its proper divisors (107024664).

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

61498536 is a wasteful number, since it uses less digits than its factorization.

61498536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1126 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 61498536 is about 7842.1002288928. The cubic root of 61498536 is about 394.7192065178.

The spelling of 61498536 in words is "sixty-one million, four hundred ninety-eight thousand, five hundred thirty-six".