61987974 has 16 divisors (see below), whose sum is σ = 124138560. Its totient is φ = 20635560.

The previous prime is 61987957. The next prime is 61987999. The reversal of 61987974 is 47978916.

It is a congruent number.

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, 1504 + ... + 11235.

It is an arithmetic number, because the mean of its divisors is an integer number (7758660).

Almost surely, 2^61987974 is an apocalyptic number.

61987974 is an abundant number, since it is smaller than the sum of its proper divisors (62150586).

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

61987974 is a wasteful number, since it uses less digits than its factorization.

61987974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13555.

The product of its digits is 762048, while the sum is 51.

The square root of 61987974 is about 7873.2441852136. The cubic root of 61987974 is about 395.7635692034.

The spelling of 61987974 in words is "sixty-one million, nine hundred eighty-seven thousand, nine hundred seventy-four".