61531962 has 32 divisors (see below), whose sum is σ = 130481664. Its totient is φ = 19310400.

The previous prime is 61531961. The next prime is 61531979. The reversal of 61531962 is 26913516.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61531961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2412 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (4077552).

Almost surely, 2^61531962 is an apocalyptic number.

61531962 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

61531962 is an abundant number, since it is smaller than the sum of its proper divisors (68949702).

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

61531962 is a wasteful number, since it uses less digits than its factorization.

61531962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014.

The product of its digits is 9720, while the sum is 33.

The square root of 61531962 is about 7844.2311286703. The cubic root of 61531962 is about 394.7907068352.

The spelling of 61531962 in words is "sixty-one million, five hundred thirty-one thousand, nine hundred sixty-two".