61958436 has 24 divisors (see below), whose sum is σ = 146401920. Its totient is φ = 20391072.

The previous prime is 61958417. The next prime is 61958447. The reversal of 61958436 is 63485916.

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, 31731 + ... + 33626.

It is an arithmetic number, because the mean of its divisors is an integer number (6100080).

Almost surely, 2^61958436 is an apocalyptic number.

It is an amenable number.

61958436 is an abundant number, since it is smaller than the sum of its proper divisors (84443484).

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

61958436 is a wasteful number, since it uses less digits than its factorization.

61958436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65443 (or 65441 counting only the distinct ones).

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

The square root of 61958436 is about 7871.3681148832. The cubic root of 61958436 is about 395.7006972146.

The spelling of 61958436 in words is "sixty-one million, nine hundred fifty-eight thousand, four hundred thirty-six".