70619904 has 144 divisors (see below), whose sum is σ = 221487840. Its totient is φ = 22118400.

The previous prime is 70619881. The next prime is 70619933. The reversal of 70619904 is 40991607.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117204 + ... + 117804.

It is an arithmetic number, because the mean of its divisors is an integer number (1538110).

Almost surely, 2^70619904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70619904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110743920).

70619904 is an abundant number, since it is smaller than the sum of its proper divisors (150867936).

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

70619904 is a wasteful number, since it uses less digits than its factorization.

70619904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 623 counting only the distinct ones).

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

The square root of 70619904 is about 8403.5649578021. The cubic root of 70619904 is about 413.3415283379.

The spelling of 70619904 in words is "seventy million, six hundred nineteen thousand, nine hundred four".