61949070 has 48 divisors (see below), whose sum is σ = 165543120. Its totient is φ = 16485264.

The previous prime is 61949053. The next prime is 61949077. The reversal of 61949070 is 7094916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61949077) 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, 129091 + ... + 129569.

It is an arithmetic number, because the mean of its divisors is an integer number (3448815).

Almost surely, 2^61949070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61949070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82771560).

61949070 is an abundant number, since it is smaller than the sum of its proper divisors (103594050).

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

61949070 is an equidigital number, since it uses as much as digits as its factorization.

61949070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 61949070 is about 7870.7731513492. The cubic root of 61949070 is about 395.6807573983.

The spelling of 61949070 in words is "sixty-one million, nine hundred forty-nine thousand, seventy".