61973450 has 48 divisors (see below), whose sum is σ = 143722944. Its totient is φ = 19315200.

The previous prime is 61973447. The next prime is 61973453. The reversal of 61973450 is 5437916.

It is an interprime number because it is at equal distance from previous prime (61973447) and next prime (61973453).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 61973450.

It is not an unprimeable number, because it can be changed into a prime (61973453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4199 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (2994228).

Almost surely, 2^61973450 is an apocalyptic number.

61973450 is an abundant number, since it is smaller than the sum of its proper divisors (81749494).

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

61973450 is a wasteful number, since it uses less digits than its factorization.

61973450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16127 (or 16122 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 61973450 is about 7872.3217667979. The cubic root of 61973450 is about 395.7326571909.

The spelling of 61973450 in words is "sixty-one million, nine hundred seventy-three thousand, four hundred fifty".