61249970 has 8 divisors (see below), whose sum is σ = 110249964. Its totient is φ = 24499984.

The previous prime is 61249949. The next prime is 61249999. The reversal of 61249970 is 7994216.

It can be written as a sum of positive squares in 2 ways, for example, as 51509329 + 9740641 = 7177^2 + 3121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3062489 + ... + 3062508.

Almost surely, 2^61249970 is an apocalyptic number.

61249970 is a deficient number, since it is larger than the sum of its proper divisors (48999994).

61249970 is a wasteful number, since it uses less digits than its factorization.

61249970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125004.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 61249970 is about 7826.2360046193. The cubic root of 61249970 is about 394.1866937982.

The spelling of 61249970 in words is "sixty-one million, two hundred forty-nine thousand, nine hundred seventy".